| Transactions |
| Date | Team | Player | Type | OthTm | EffDate | When |
| 3/28/2019 | CBB | Dozier,H | Placed on disabled list | | 3/29/2019 | Before |
| 3/28/2019 | CBB | Upton | Promoted to active roster | | | Before |
| 3/30/2019 | NRI | Gonzalez,Ch | Promoted to active roster | | | Before |
| 3/30/2019 | NRI | Hedges | Promoted to active roster | | | Before |
| 3/30/2019 | NRI | Lowe,B | Placed on disabled list | | 3/31/2019 | Before |
| 3/30/2019 | NRI | Vogt | Placed on disabled list | | 3/29/2019 | Before |
| 4/3/2019 | NRI | Duvall | Demoted to reserve roster | | | Before |
| 4/3/2019 | NRI | Glasnow | Promoted to active roster | | | Before |
| 4/3/2019 | NRI | Gonzalez,Ch | Demoted to reserve roster | | | Before |
| 4/3/2019 | NRI | Urias,J | Promoted to active roster | | | Before |
| 4/4/2019 | HFX | Peralta,F | Promoted to active roster | | | Before |
| 4/4/2019 | HFX | Wainwright | Placed on disabled list | | 4/2/2019 | Before |
| 4/6/2019 | NRI | Camargo | Promoted to active roster | | | Before |
| 4/6/2019 | NRI | Urias,J | Demoted to reserve roster | | | Before |
| 4/10/2019 | UCA | Garcia,J | Placed on disabled list | | 4/10/2019 | Before |
| 4/10/2019 | UCA | McKay,D | Promoted to active roster | | | Before |
| 4/11/2019 | HIG | Frazier,C | Placed on disabled list | | 4/10/2019 | Before |
| 4/11/2019 | HIG | Jimenez,J | Promoted to active roster | | | Before |
| 4/11/2019 | HIG | Maeda | Placed on disabled list | | 4/11/2019 | Before |
| 4/11/2019 | HIG | Magill | Promoted to active roster | | | Before |
| 4/11/2019 | HIG | May,D | Promoted to active roster | | | Before |
| 4/11/2019 | HIG | Munoz,A | Demoted to reserve roster | | | Before |
| 4/11/2019 | HIG | Severino,L | Demoted to reserve roster | | | Before |
| 4/11/2019 | HIG | VanMeter | Promoted to active roster | | | Before |
| 4/11/2019 | MPH | Lopez,R | Promoted to active roster | | | Before |
| 4/11/2019 | MPH | Skaggs | Demoted to reserve roster | | | Before |
| 4/11/2019 | NRI | Camargo | Demoted to reserve roster | | | Before |
| 4/11/2019 | NRI | Gonsolin | Promoted to active roster | | | Before |
| 4/13/2019 | BDM | Archer | Promoted to active roster | | | Before |
| 4/13/2019 | BDM | Gallen | Placed on disabled list | | 4/13/2019 | Before |
| 4/13/2019 | NRI | Gonsolin | Demoted to reserve roster | | | Before |
| 4/13/2019 | NRI | Vogt | Activated from disabled list | | | Before |
| 4/18/2019 | ALS | Gsellman | Placed on disabled list | | 4/18/2019 | Before |
| 4/18/2019 | ALS | Mayza | Promoted to active roster | | | Before |
| 4/18/2019 | HFX | Floro -X | Promoted to active roster | | | Before |
| 4/18/2019 | HFX | Harper,R | Demoted to reserve roster | | | Before |
| 4/18/2019 | HIG | Graterol,B -X | Promoted to active roster | | | Before |
| 4/18/2019 | HIG | Magill | Demoted to reserve roster | | | Before |
| 4/18/2019 | NRI | Duvall | Promoted to active roster | | | Before |
| 4/18/2019 | NRI | Glasnow | Demoted to reserve roster | | | Before |
| 4/18/2019 | NRI | Gonzalez,Ch | Promoted to active roster | | | Before |
| 4/18/2019 | NRI | Hedges | Demoted to reserve roster | | | Before |
| 4/20/2019 | CBB | Dozier,H | Activated from disabled list | | | Before |
| 4/20/2019 | CBB | Goodwin | Placed on disabled list | | 4/20/2019 | Before |
| 4/20/2019 | NRI | Gonzalez,Ch | Demoted to reserve roster | | | Before |
| 4/20/2019 | NRI | Ponce de Leon | Promoted to active roster | | | Before |
| 4/22/2019 | BDM | Collins,Z | Promoted to active roster | | | Before |
| 4/22/2019 | BDM | Nola,Au | Placed on disabled list | | 4/23/2019 | Before |
| 4/24/2019 | HIG | Ford | Demoted to reserve roster | | | Before |
| 4/24/2019 | HIG | Frazier,C | Activated from disabled list | | | Before |
| 4/24/2019 | MPH | Plutko | Demoted to reserve roster | | | Before |
| 4/24/2019 | MPH | Sabathia | Promoted to active roster | | | Before |
| 4/24/2019 | MPH | Sanchez,An | Demoted to reserve roster | | | Before |
| 4/24/2019 | MPH | Skaggs | Promoted to active roster | | | Before |
| 4/24/2019 | NRI | Ponce de Leon | Demoted to reserve roster | | | Before |
| 4/24/2019 | NRI | Urias,J | Promoted to active roster | | | Before |
| 4/26/2019 | BDM | Almonte,A -X | Promoted to active roster | | | Before |
| 4/26/2019 | BDM | Archer | Demoted to reserve roster | | | Before |
| 4/26/2019 | BDM | Canha | Placed on disabled list | | 4/26/2019 | Before |
| 4/26/2019 | BDM | Gallen | Activated from disabled list | | | Before |
| 4/26/2019 | HIG | Graterol,B -X | Demoted to reserve roster | | | Before |
| 4/26/2019 | HIG | Maeda | Activated from disabled list | | | Before |
| 4/26/2019 | HIG | Magill | Promoted to active roster | | | Before |
| 4/26/2019 | HIG | May,D | Demoted to reserve roster | | | Before |
| 4/26/2019 | ROC | Buchholz | Promoted to active roster | | | Before |
| 4/26/2019 | ROC | Chatwood | Placed on disabled list | | 4/26/2019 | Before |
| 4/26/2019 | ROC | Kimbrel | Promoted to active roster | | | Before |
| 4/26/2019 | ROC | Lopez,J | Demoted to reserve roster | | | Before |
| 4/26/2019 | UCA | Garcia,J | Activated from disabled list | | | Before |
| 4/26/2019 | UCA | McKay,D | Demoted to reserve roster | | | Before |
| 4/29/2019 | BFT | Galvis | Placed on disabled list | | 4/30/2019 | Before |
| 4/29/2019 | BFT | Hoerner | Promoted to active roster | | | Before |
| 4/30/2019 | BDM | Guerra,JaL | Demoted to reserve roster | | | Before |
| 4/30/2019 | BDM | Helsley -X | Promoted to active roster | | | Before |
| 5/1/2019 | BFT | Kittredge | Placed on disabled list | | 5/1/2019 | Before |
| 5/1/2019 | BFT | Wick | Promoted to active roster | | | Before |
| 5/1/2019 | HFX | Drake | Promoted to active roster | | | Before |
| 5/1/2019 | HFX | Peralta,F | Demoted to reserve roster | | | Before |
| 5/1/2019 | HFX | Pressly | Demoted to reserve roster | | | Before |
| 5/1/2019 | HFX | Wainwright | Activated from disabled list | | | Before |
| 5/1/2019 | HIG | Garcia,B | Released | | | Before |
| 5/1/2019 | HIG | Mejia,F | Placed on disabled list | | 4/30/2019 | Before |
| 5/1/2019 | HIG | Perez,Mi | Signed | | | Before |
| 5/1/2019 | HIG | Perez,Mi | Promoted to active roster | | | Before |
| 5/1/2019 | MPH | Crick | Promoted to active roster | | | Before |
| 5/1/2019 | MPH | Rogers,Ty -X | Demoted to reserve roster | | | Before |
| 5/1/2019 | MPH | Sabathia | Demoted to reserve roster | | | Before |
| 5/1/2019 | MPH | Sanchez,An | Promoted to active roster | | | Before |
| 5/1/2019 | MPH | Smeltzer | Promoted to active roster | | | Before |
| 5/1/2019 | MPH | Vazquez,F | Placed on disabled list | | 4/29/2019 | Before |
| 5/1/2019 | NRI | Glasnow | Promoted to active roster | | | Before |
| 5/1/2019 | NRI | Urias,J | Demoted to reserve roster | | | Before |
| 5/3/2019 | ALS | Pinder | Promoted to active roster | | | Before |
| 5/3/2019 | ALS | Stewart,C | Demoted to reserve roster | | | Before |
| 5/3/2019 | ALS | Taillon | Demoted to reserve roster | | | Before |
| 5/3/2019 | ALS | Weaver | Promoted to active roster | | | Before |
| 5/3/2019 | NRI | Glasnow | Demoted to reserve roster | | | Before |
| 5/3/2019 | NRI | Gonzalez,Ch | Promoted to active roster | | | Before |
| 5/3/2019 | NRI | Mills | Promoted to active roster | | | Before |
| 5/3/2019 | NRI | Woodruff | Placed on disabled list | | 5/2/2019 | Before |
| 5/3/2019 | ROC | Bolanos | Demoted to reserve roster | | | Before |
| 5/3/2019 | ROC | Bolanos | Promoted to active roster | | | Before |
| 5/3/2019 | ROC | Carrasco | Placed on disabled list | | 5/4/2019 | Before |
| 5/3/2019 | ROC | Peraza | Demoted to reserve roster | | | Before |
| 5/3/2019 | ROC | Robertson,Dan | Promoted to active roster | | | Before |
| 5/3/2019 | ROC | Ynoa,G | Promoted to active roster | | | Before |
| 5/3/2019 | UCA | Barlow | Promoted to active roster | | | Before |
| 5/3/2019 | UCA | Cordero,J | Demoted to reserve roster | | | Before |
| 5/3/2019 | UCA | Farmer,K | Promoted to active roster | | | Before |
| 5/3/2019 | UCA | Jackson,L | Promoted to active roster | | | Before |
| 5/3/2019 | UCA | Mercer | Placed on disabled list | | 5/4/2019 | Before |
| 5/3/2019 | UCA | Perdomo | Demoted to reserve roster | | | Before |
| 5/6/2019 | HIG | Harvey,H | Demoted to reserve roster | | | Before |
| 5/6/2019 | HIG | Harvey,H | Promoted to active roster | | | Before |
| 5/6/2019 | HIG | Holder | Promoted to active roster | | | Before |
| 5/6/2019 | HIG | Jimenez,J | Demoted to reserve roster | | | Before |
| 5/7/2019 | ALS | Gsellman | Activated from disabled list | | | Before |
| 5/7/2019 | ALS | Mayza | Demoted to reserve roster | | | Before |
| 5/7/2019 | ALS | Richards,T | Promoted to active roster | | | Before |
| 5/7/2019 | ALS | Ryu | Placed on disabled list | | 5/7/2019 | Before |
| 5/7/2019 | CBB | Goodwin | Activated from disabled list | | | Before |
| 5/7/2019 | CBB | Healy | Demoted to reserve roster | | | Before |
| 5/7/2019 | NRI | Cessa | Demoted to reserve roster | | | Before |
| 5/7/2019 | NRI | Gonsolin | Promoted to active roster | | | Before |
| 5/7/2019 | UCA | Flowers | Promoted to active roster | | | Before |
| 5/7/2019 | UCA | Sano | Placed on disabled list | | 5/8/2019 | Before |
| 5/13/2019 | HIG | Hill,R | Promoted to active roster | | | Before |
| 5/13/2019 | HIG | Holder | Demoted to reserve roster | | | Before |
| 5/13/2019 | HIG | Jimenez,J | Promoted to active roster | | | Before |
| 5/13/2019 | HIG | Pomeranz | Demoted to reserve roster | | | Before |
| 5/13/2019 | MMC | Castillo,We | Promoted to active roster | | | Before |
| 5/13/2019 | MMC | Sisco | Placed on disabled list | | 5/14/2019 | Before |
| 5/13/2019 | NRI | Lowe,B | Activated from disabled list | | | Before |
| 5/13/2019 | NRI | Sogard | Placed on disabled list | | 5/13/2019 | Before |
| 5/14/2019 | BDM | Alford -X | Signed | | | Before |
| 5/14/2019 | BDM | Almonte,A -X | Released | | | Before |
| 5/14/2019 | BDM | Collins,Z | Demoted to reserve roster | | | Before |
| 5/14/2019 | BDM | Nola,Au | Activated from disabled list | | | Before |
| 5/14/2019 | BDM | Stevenson | Signed | | | Before |
| 5/14/2019 | BDM | Stevenson | Promoted to active roster | | | Before |
| 5/14/2019 | BDM | Wade,L | Signed | | | Before |
| 5/14/2019 | BDM | Wade,L | Demoted to reserve roster | | | Before |
| 5/14/2019 | CBB | LaMarre -X | Promoted to active roster | | | Before |
| 5/14/2019 | CBB | Lamb -X | Demoted to reserve roster | | | Before |
| 5/16/2019 | NRI | Gonsolin | Demoted to reserve roster | | | After |
| 5/18/2019 | NRI | Alvarado | Promoted to active roster | | | Before |
| 5/20/2019 | BFT | Aquino | Demoted to reserve roster | | | Before |
| 5/20/2019 | BFT | Aquino | Promoted to active roster | | | Before |
| 5/20/2019 | BFT | Galvis | Activated from disabled list | | | Before |
| 5/20/2019 | BFT | Hoerner | Demoted to reserve roster | | | Before |
| 5/20/2019 | BFT | Lopes | Promoted to active roster | | | Before |
| 5/20/2019 | BFT | Rengifo | Demoted to reserve roster | | | Before |
| 5/20/2019 | HIG | Mejia,F | Activated from disabled list | | | Before |
| 5/20/2019 | HIG | Perez,Mi | Demoted to reserve roster | | | Before |
| 5/20/2019 | NRI | Gonzalez,Ch | Demoted to reserve roster | | | After |
| 5/20/2019 | NRI | Mills | Demoted to reserve roster | | | After |
| 5/22/2019 | ALS | Reid-Foley | Promoted to active roster | | | Before |
| 5/22/2019 | ALS | Urquidy | Promoted to active roster | | | Before |
| 5/22/2019 | ALS | Weaver | Placed on disabled list | | 5/10/2019 | Before |
| 5/22/2019 | HFX | Adam -X | Demoted to reserve roster | | | Before |
| 5/22/2019 | NRI | Ponce de Leon | Promoted to active roster | | | Before |
| 5/22/2019 | NRI | Waguespack | Promoted to active roster | | | Before |
| 5/22/2019 | UCA | Iannetta | Demoted to reserve roster | | | Before |
| 5/22/2019 | UCA | Leyba -X | Signed | | | Before |
| 5/22/2019 | UCA | McKay,D | Released | | | Before |
| 5/22/2019 | UCA | Sano | Activated from disabled list | | | Before |
| 5/24/2019 | BDM | Archer | Promoted to active roster | | | Before |
| 5/24/2019 | BDM | Canha | Activated from disabled list | | | Before |
| 5/24/2019 | BDM | Hamels | Placed on disabled list | | 5/23/2019 | Before |
| 5/24/2019 | BDM | Stevenson | Demoted to reserve roster | | | Before |
| 5/24/2019 | HIG | Hill,R | Demoted to reserve roster | | | Before |
| 5/24/2019 | HIG | Severino,L | Promoted to active roster | | | Before |
| 5/24/2019 | NRI | Alvarado | Demoted to reserve roster | | | Before |
| 5/24/2019 | NRI | Urias,J | Promoted to active roster | | | Before |
| 5/24/2019 | ROC | Chatwood | Activated from disabled list | | | Before |
| 5/24/2019 | ROC | Dean | Promoted to active roster | | | Before |
| 5/24/2019 | ROC | Frazier,T | Placed on disabled list | | 5/25/2019 | Before |
| 5/24/2019 | ROC | Kimbrel | Demoted to reserve roster | | | Before |
| 5/24/2019 | UCA | Barlow | Demoted to reserve roster | | | Before |
| 5/24/2019 | UCA | Leyba -X | Promoted to active roster | | | Before |
| 5/26/2019 | HFX | Peralta,F | Promoted to active roster | | | Before |
| 5/26/2019 | HFX | Wainwright | Placed on disabled list | | 5/23/2019 | Before |
| 5/28/2019 | ALS | Avila,P | Promoted to active roster | | | Before |
| 5/28/2019 | ALS | Brinson | Promoted to active roster | | | Before |
| 5/28/2019 | ALS | Cruz | Placed on disabled list | | 5/13/2019 | Before |
| 5/28/2019 | ALS | Grichuk | Placed on disabled list | | 5/23/2019 | Before |
| 5/28/2019 | ALS | Long -X | Demoted to reserve roster | | | Before |
| 5/28/2019 | ALS | Reid-Foley | Demoted to reserve roster | | | Before |
| 5/28/2019 | ALS | Ryu | Activated from disabled list | | | Before |
| 5/28/2019 | ALS | Stewart,C | Promoted to active roster | | | Before |
| 5/28/2019 | HIG | Hill,R | Promoted to active roster | | | Before |
| 5/28/2019 | HIG | Maeda | Demoted to reserve roster | | | Before |
| 5/28/2019 | HIG | Montero | Demoted to reserve roster | | | Before |
| 5/28/2019 | HIG | Munoz,A | Promoted to active roster | | | Before |
| 5/28/2019 | HIG | Pomeranz | Promoted to active roster | | | Before |
| 5/28/2019 | HIG | Severino,L | Demoted to reserve roster | | | Before |
| 5/28/2019 | UCA | Brice | Demoted to reserve roster | | | Before |
| 5/28/2019 | UCA | Cordero,J | Promoted to active roster | | | Before |
| 5/28/2019 | UCA | Jackson,L | Demoted to reserve roster | | | Before |
| 5/28/2019 | UCA | Perdomo | Promoted to active roster | | | Before |
| 5/29/2019 | HFX | Knapp | Promoted to active roster | | | Before |
| 5/29/2019 | HFX | Lucroy | Placed on disabled list | | 5/27/2019 | Before |
| 5/30/2019 | MPH | Alvarez,J | Demoted to reserve roster | | | Before |
| 5/30/2019 | MPH | Mazara | Promoted to active roster | | | Before |
| 5/30/2019 | MPH | Naquin | Placed on disabled list | | 5/30/2019 | Before |
| 5/30/2019 | MPH | Smoak | Promoted to active roster | | | Before |
| 5/30/2019 | MPH | Tauchman | Placed on disabled list | | 5/15/2019 | Before |
| 5/30/2019 | MPH | Vazquez,F | Activated from disabled list | | | Before |
| 5/30/2019 | NRI | Duvall | Demoted to reserve roster | | | Before |
| 5/30/2019 | NRI | Sogard | Activated from disabled list | | | Before |
| 5/30/2019 | UCA | Buxton | Placed on disabled list | | 5/31/2019 | Before |
| 5/30/2019 | UCA | Jackson,L | Promoted to active roster | | | Before |
| 6/3/2019 | HIG | Graterol,B -X | Promoted to active roster | | | Before |
| 6/3/2019 | HIG | Munoz,A | Demoted to reserve roster | | | Before |
| 6/3/2019 | MPH | Anderson,Ti | Placed on disabled list | | 6/2/2019 | Before |
| 6/3/2019 | MPH | Mendick | Promoted to active roster | | | Before |
| 6/3/2019 | NRI | Cessa | Promoted to active roster | | | Before |
| 6/3/2019 | NRI | Ponce de Leon | Demoted to reserve roster | | | Before |
| 6/3/2019 | NRI | Waguespack | Demoted to reserve roster | | | Before |
| 6/3/2019 | NRI | Woodruff | Activated from disabled list | | | Before |
| 6/4/2019 | HFX | Hardy | Promoted to active roster | | | Before |
| 6/4/2019 | HFX | Pressly | Promoted to active roster | | | Before |
| 6/4/2019 | MMC | Castillo,We | Demoted to reserve roster | | | Before |
| 6/4/2019 | MMC | Sisco | Activated from disabled list | | | Before |
| 6/4/2019 | MPH | Mazara | Demoted to reserve roster | | | Before |
| 6/4/2019 | MPH | Tauchman | Activated from disabled list | | | Before |
| 6/4/2019 | ROC | Peraza | Promoted to active roster | | | Before |
| 6/4/2019 | ROC | Russell | Placed on disabled list | | 6/5/2019 | Before |
| 6/6/2019 | BDM | Gallen | Demoted to reserve roster | | | Before |
| 6/6/2019 | BDM | Hamels | Activated from disabled list | | | Before |
| 6/6/2019 | BDM | Osuna,J | Promoted to active roster | | | Before |
| 6/6/2019 | BDM | Springer | Placed on disabled list | | 6/7/2019 | Before |
| 6/6/2019 | UCA | Lauer | Promoted to active roster | | | Before |
| 6/6/2019 | UCA | Smith,C | Placed on disabled list | | 6/7/2019 | Before |
| 6/11/2019 | HFX | Adam -X | Released | | | Before |
| 6/11/2019 | HFX | Erlin | Released | | | Before |
| 6/11/2019 | HFX | Pannone | Signed | | | Before |
| 6/11/2019 | HFX | Rodriguez,Ri | Signed | | | Before |
| 6/11/2019 | MMC | Carpenter,M | Promoted to active roster | | | Before |
| 6/11/2019 | MMC | Sandoval,Pab -X | Demoted to reserve roster | | | Before |
| 6/11/2019 | MPH | Kendrick | Placed on disabled list | | 6/9/2019 | Before |
| 6/11/2019 | MPH | Mazara | Promoted to active roster | | | Before |
| 6/11/2019 | NRI | Cessa | Demoted to reserve roster | | | Before |
| 6/11/2019 | NRI | Glasnow | Promoted to active roster | | | Before |
| 6/11/2019 | UCA | Bowman | Demoted to reserve roster | | | Before |
| 6/11/2019 | UCA | Ferguson | Promoted to active roster | | | Before |
| 6/13/2019 | MPH | Kendrick | Placed on disabled list | | 6/9/2019 | Before |
| 6/13/2019 | MPH | Mazara | Promoted to active roster | | | Before |
| 6/13/2019 | NRI | Glasnow | Demoted to reserve roster | | | After |
| 6/13/2019 | ROC | Carrasco | Activated from disabled list | | | Before |
| 6/13/2019 | ROC | Ynoa,G | Demoted to reserve roster | | | Before |
| 6/13/2019 | TCI | Crawford,B | Promoted to active roster | | | Before |
| 6/13/2019 | TCI | Edman | Demoted to reserve roster | | | Before |
| 6/13/2019 | UCA | McNeil | Placed on disabled list | | 6/14/2019 | Before |
| 6/13/2019 | UCA | Mercer | Activated from disabled list | | | Before |
| 6/14/2019 | NRI | Duvall | Promoted to active roster | | | Before |
| 6/17/2019 | HFX | Knapp | Demoted to reserve roster | | | Before |
| 6/17/2019 | HFX | Lucroy | Activated from disabled list | | | Before |
| 6/17/2019 | HFX | Lyles | Demoted to reserve roster | | | Before |
| 6/17/2019 | HFX | Wainwright | Activated from disabled list | | | Before |
| 6/17/2019 | MPH | Plutko | Promoted to active roster | | | Before |
| 6/17/2019 | MPH | Sanchez,An | Placed on disabled list | | 6/18/2019 | Before |
| 6/19/2019 | CBB | Brown | Promoted to active roster | | | Before |
| 6/19/2019 | CBB | LaMarre -X | Demoted to reserve roster | | | Before |
| 6/19/2019 | HIG | Ford | Promoted to active roster | | | Before |
| 6/19/2019 | HIG | Graterol,B -X | Demoted to reserve roster | | | Before |
| 6/19/2019 | HIG | Jones,J | Placed on disabled list | | 6/17/2019 | Before |
| 6/19/2019 | HIG | Maeda | Promoted to active roster | | | Before |
| 6/19/2019 | MMC | Brosseau -X | Demoted to reserve roster | | | Before |
| 6/19/2019 | MMC | Dubon | Promoted to active roster | | | Before |
| 6/19/2019 | MMC | Gaviglio | Demoted to reserve roster | | | Before |
| 6/19/2019 | MMC | Kikuchi | Demoted to reserve roster | | | Before |
| 6/19/2019 | MMC | Lopez,P | Promoted to active roster | | | Before |
| 6/19/2019 | MMC | Plesac | Promoted to active roster | | | Before |
| 6/19/2019 | NRI | Duvall | Demoted to reserve roster | | | Before |
| 6/19/2019 | NRI | Gonsolin | Promoted to active roster | | | Before |
| 6/19/2019 | UCA | Buxton | Activated from disabled list | | | Before |
| 6/19/2019 | UCA | Cordero,J | Demoted to reserve roster | | | Before |
| 6/21/2019 | BDM | Cervelli | Demoted to reserve roster | | | Before |
| 6/21/2019 | BDM | Freeman,M | Demoted to reserve roster | | | Before |
| 6/21/2019 | BDM | Springer | Activated from disabled list | | | Before |
| 6/21/2019 | BDM | Straw | Promoted to active roster | | | Before |
| 6/21/2019 | ROC | Buchholz | Demoted to reserve roster | | | Before |
| 6/21/2019 | ROC | Ynoa,G | Promoted to active roster | | | Before |
| 6/22/2019 | BFT | Dickerson,A | Placed on disabled list | | 6/23/2019 | Before |
| 6/22/2019 | BFT | Hoerner | Promoted to active roster | | | Before |
| 6/24/2019 | ALS | Avila,P | Demoted to reserve roster | | | Before |
| 6/24/2019 | ALS | Cruz | Activated from disabled list | | | Before |
| 6/24/2019 | ALS | Grichuk | Activated from disabled list | | | Before |
| 6/24/2019 | ALS | Stewart,C | Demoted to reserve roster | | | Before |
| 6/24/2019 | ALS | Urquidy | Demoted to reserve roster | | | Before |
| 6/24/2019 | ALS | Weaver | Activated from disabled list | | | Before |
| 6/24/2019 | NRI | Urias,J | Demoted to reserve roster | | | After |
| 6/25/2019 | CBB | LaMarre -X | Released | | | Before |
| 6/25/2019 | CBB | Sewald | Signed | | | Before |
| 6/25/2019 | CBB | Sipp -X | Released | | | Before |
| 6/25/2019 | CBB | Sipp -X | Demoted to reserve roster | | | Before |
| 6/25/2019 | CBB | Stubbs -X | Signed | | | Before |
| 6/25/2019 | CBB | Stubbs -X | Demoted to reserve roster | | | Before |
| 6/25/2019 | MPH | Anderson,Ti | Activated from disabled list | | | Before |
| 6/25/2019 | MPH | Cease | Promoted to active roster | | | Before |
| 6/25/2019 | MPH | Kendrick | Activated from disabled list | | | Before |
| 6/25/2019 | MPH | Mazara | Demoted to reserve roster | | | Before |
| 6/25/2019 | MPH | Mendick | Demoted to reserve roster | | | Before |
| 6/25/2019 | MPH | Naquin | Activated from disabled list | | | Before |
| 6/25/2019 | MPH | Skaggs | Demoted to reserve roster | | | Before |
| 6/25/2019 | MPH | Smoak | Demoted to reserve roster | | | Before |
| 6/25/2019 | NRI | Waguespack | Promoted to active roster | | | Before |
| 6/25/2019 | ROC | Buchholz | Promoted to active roster | | | Before |
| 6/25/2019 | ROC | Dixon | Demoted to reserve roster | | | Before |
| 6/25/2019 | ROC | Frazier,T | Activated from disabled list | | | Before |
| 6/25/2019 | ROC | Russell | Activated from disabled list | | | Before |
| 6/25/2019 | ROC | Russell | Demoted to reserve roster | | | Before |
| 6/25/2019 | ROC | Ynoa,G | Demoted to reserve roster | | | Before |
| 6/27/2019 | BFT | Font | Promoted to active roster | | | Before |
| 6/27/2019 | BFT | Wojciechowski | Demoted to reserve roster | | | Before |
| 6/27/2019 | CBB | Murphy,JR | Promoted to active roster | | | Before |
| 6/27/2019 | CBB | Stallings | Demoted to reserve roster | | | Before |
| 6/27/2019 | NRI | Gonsolin | Demoted to reserve roster | | | After |
| 6/27/2019 | ROC | Littell | Demoted to reserve roster | | | Before |
| 6/27/2019 | ROC | Lopez,J | Promoted to active roster | | | Before |
| 6/28/2019 | NRI | Gonzalez,Ch | Promoted to active roster | | | Before |
| 6/30/2019 | HFX | Alexander,T | Demoted to reserve roster | | | Before |
| 6/30/2019 | HFX | Velasquez | Promoted to active roster | | | Before |
| 6/30/2019 | MPH | Alvarez,J | Promoted to active roster | | | Before |
| 6/30/2019 | MPH | Bleier | Demoted to reserve roster | | | Before |
| 6/30/2019 | MPH | Bleier | Promoted to active roster | | | Before |
| 6/30/2019 | MPH | Crick | Demoted to reserve roster | | | Before |
| 6/30/2019 | MPH | Martin,B | Demoted to reserve roster | | | Before |
| 6/30/2019 | MPH | Rogers,Ty -X | Promoted to active roster | | | Before |
| 6/30/2019 | NRI | Gonzalez,Ch | Demoted to reserve roster | | | After |
| 7/2/2019 | BDM | Cervelli | Demoted to reserve roster | | | Before |
| 7/2/2019 | BDM | Cervelli | Promoted to active roster | | | Before |
| 7/2/2019 | BDM | Collins,Z | Promoted to active roster | | | Before |
| 7/2/2019 | BDM | Culberson | Demoted to reserve roster | | | Before |
| 7/2/2019 | BDM | Gore | Promoted to active roster | | | Before |
| 7/2/2019 | BDM | Phegley | Demoted to reserve roster | | | Before |
| 7/2/2019 | CBB | Hicks,A | Demoted to reserve roster | | | Before |
| 7/2/2019 | CBB | Kipnis | Promoted to active roster | | | Before |
| 7/2/2019 | CBB | Murphy,JR | Demoted to reserve roster | | | Before |
| 7/2/2019 | CBB | Sewald | Promoted to active roster | | | Before |
| 7/2/2019 | CBB | Stubbs -X | Promoted to active roster | | | Before |
| 7/2/2019 | HIG | Ford | Demoted to reserve roster | | | Before |
| 7/2/2019 | HIG | Jones,J | Activated from disabled list | | | Before |
| 7/2/2019 | MMC | Beaty | Promoted to active roster | | | Before |
| 7/2/2019 | MMC | Maybin -X | Demoted to reserve roster | | | Before |
| 7/2/2019 | NRI | Ponce de Leon | Promoted to active roster | | | Before |
| 7/2/2019 | UCA | Farrell | Signed | | | Before |
| 7/2/2019 | UCA | Farrell | Promoted to active roster | | | Before |
| 7/2/2019 | UCA | Jackson,L | Demoted to reserve roster | | | Before |
| 7/2/2019 | UCA | Leyba -X | Released | | | Before |
| 7/2/2019 | UCA | Leyba -X | Demoted to reserve roster | | | Before |
| 7/2/2019 | UCA | McNeil | Activated from disabled list | | | Before |
| 7/2/2019 | UCA | Smith,C | Activated from disabled list | | | Before |
| 7/2/2019 | UCA | Smith,C | Demoted to reserve roster | | | Before |
| 7/2/2019 | UCA | Snell | Demoted to reserve roster | | | Before |
| 7/2/2019 | UCA | Zeuch -X | Signed | | | Before |
| 7/2/2019 | UCA | Zeuch -X | Promoted to active roster | | | Before |
| 7/4/2019 | BFT | Hill,T | Demoted to reserve roster | | | Before |
| 7/4/2019 | BFT | Kittredge | Activated from disabled list | | | Before |
| 7/4/2019 | NRI | Ponce de Leon | Demoted to reserve roster | | | After |
| 7/5/2019 | NRI | Cessa | Promoted to active roster | | | Before |
| 7/7/2019 | NRI | Waguespack | Demoted to reserve roster | | | After |
| 7/12/2019 | BDM | Alford -X | Released | | | Before |
| 7/12/2019 | BDM | Alonso,Y | Signed | | | Before |
| 7/12/2019 | BDM | Alonso,Y | Promoted to active roster | | | Before |
| 7/12/2019 | BDM | Austin | Demoted to reserve roster | | | Before |
| 7/12/2019 | BDM | Dini | Signed | | | Before |
| 7/12/2019 | BDM | Dini | Promoted to active roster | | | Before |
| 7/12/2019 | BDM | Gore | Demoted to reserve roster | | | Before |
| 7/12/2019 | BDM | Stevenson | Released | | | Before |
| 7/12/2019 | HFX | Rodriguez,Ro | Promoted to active roster | | | Before |
| 7/12/2019 | HFX | Zobrist - X | Demoted to reserve roster | | | Before |
| 7/12/2019 | MMC | Barria | Promoted to active roster | | | Before |
| 7/12/2019 | MMC | Keller,B | Placed on disabled list | | 7/6/2019 | Before |
| 7/12/2019 | MPH | Crick | Promoted to active roster | | | Before |
| 7/12/2019 | MPH | Martin,B | Demoted to reserve roster | | | Before |
| 7/12/2019 | MPH | Martin,B | Promoted to active roster | | | Before |
| 7/12/2019 | MPH | Rogers,Ty -X | Demoted to reserve roster | | | Before |
| 7/12/2019 | NRI | Glasnow | Promoted to active roster | | | Before |
| 7/13/2019 | HIG | Alvarez,Y | Placed on disabled list | | 7/14/2019 | Before |
| 7/13/2019 | HIG | Ford | Promoted to active roster | | | Before |
| 7/13/2019 | HIG | Neuse -X | Promoted to active roster | | | Before |
| 7/13/2019 | HIG | Ramirez,Jo | Placed on disabled list | | 7/13/2019 | Before |
| 7/14/2019 | BFT | Aquino | Demoted to reserve roster | | | Before |
| 7/14/2019 | BFT | Gregorius | Promoted to active roster | | | Before |
| 7/14/2019 | NRI | Sadler | Demoted to reserve roster | | | Before |
| 7/14/2019 | NRI | Urias,J | Promoted to active roster | | | Before |
| 7/16/2019 | BDM | Osuna,J | Placed on disabled list | | 7/17/2019 | Before |
| 7/16/2019 | BDM | Wade,L | Promoted to active roster | | | Before |
| 7/17/2019 | BDM | Gallen | Promoted to active roster | | | Before |
| 7/17/2019 | BDM | Hamels | Demoted to reserve roster | | | Before |
| 7/17/2019 | NRI | Urias,J | Demoted to reserve roster | | | After |
| 7/17/2019 | TCI | Brault | Promoted to active roster | | | Before |
| 7/17/2019 | TCI | Foltynewicz | Demoted to reserve roster | | | Before |
| 7/17/2019 | TCI | Perez,Ma | Promoted to active roster | | | Before |
| 7/17/2019 | TCI | Rainey | Demoted to reserve roster | | | Before |
| 7/17/2019 | TCI | Rodriguez,Je | Promoted to active roster | | | Before |
| 7/17/2019 | TCI | Taylor,J | Demoted to reserve roster | | | Before |
| 7/18/2019 | BFT | Clase | Promoted to active roster | | | Before |
| 7/18/2019 | BFT | Dominguez | Released | | | Before |
| 7/18/2019 | BFT | Gonzalez,E | Signed | | | Before |
| 7/18/2019 | BFT | Gonzalez,E | Promoted to active roster | | | Before |
| 7/18/2019 | BFT | Granderson | Signed | | | Before |
| 7/18/2019 | BFT | Hoerner | Demoted to reserve roster | | | Before |
| 7/18/2019 | BFT | Wick | Demoted to reserve roster | | | Before |
| 7/18/2019 | BFT | Wojciechowski | Released | | | Before |
| 7/18/2019 | CBB | Allard | Promoted to active roster | | | Before |
| 7/18/2019 | CBB | Gray,J | Demoted to reserve roster | | | Before |
| 7/18/2019 | CBB | Guzman | Promoted to active roster | | | Before |
| 7/18/2019 | CBB | Healy | Promoted to active roster | | | Before |
| 7/18/2019 | CBB | Hicks,A | Promoted to active roster | | | Before |
| 7/18/2019 | CBB | Mercado | Demoted to reserve roster | | | Before |
| 7/18/2019 | CBB | Moreland | Demoted to reserve roster | | | Before |
| 7/18/2019 | CBB | Upton | Demoted to reserve roster | | | Before |
| 7/18/2019 | MPH | Cease | Demoted to reserve roster | | | Before |
| 7/18/2019 | MPH | Sanchez,An | Activated from disabled list | | | Before |
| 7/18/2019 | NRI | Braun | Placed on disabled list | | 7/17/2019 | Before |
| 7/18/2019 | NRI | Duvall | Promoted to active roster | | | Before |
| 7/18/2019 | NRI | Gonzalez,Ch | Promoted to active roster | | | Before |
| 7/20/2019 | MPH | Cease | Promoted to active roster | | | Before |
| 7/20/2019 | MPH | Martin,B | Promoted to active roster | | | Before |
| 7/20/2019 | MPH | Plutko | Placed on disabled list | | 7/20/2019 | Before |
| 7/20/2019 | MPH | Smeltzer | Demoted to reserve roster | | | Before |
| 7/20/2019 | NRI | Gonzalez,Ch | Demoted to reserve roster | | | Before |
| 7/20/2019 | NRI | Mills | Promoted to active roster | | | Before |
| 7/24/2019 | BDM | Hamels | Promoted to active roster | | | Before |
| 7/24/2019 | BDM | Kershaw | Demoted to reserve roster | | | Before |
| 7/24/2019 | HIG | Hill,R | Demoted to reserve roster | | | Before |
| 7/24/2019 | HIG | Ross,J | Promoted to active roster | | | Before |
| 7/24/2019 | UCA | Barlow | Promoted to active roster | | | Before |
| 7/24/2019 | UCA | Marshall | Demoted to reserve roster | | | Before |
| 7/25/2019 | ALS | Bichette -X | Demoted to reserve roster | | | Before |
| 7/25/2019 | ALS | Stewart,C | Promoted to active roster | | | Before |
| 7/25/2019 | CBB | Cuthbert | Demoted to reserve roster | | | Before |
| 7/25/2019 | CBB | Guillorme | Demoted to reserve roster | | | Before |
| 7/25/2019 | CBB | Martin,Co | Demoted to reserve roster | | | Before |
| 7/25/2019 | CBB | Martin,Co | Promoted to active roster | | | Before |
| 7/25/2019 | CBB | Mercado | Promoted to active roster | | | Before |
| 7/25/2019 | CBB | Murphy,JR | Promoted to active roster | | | Before |
| 7/25/2019 | CBB | Rodon | Demoted to reserve roster | | | Before |
| 7/25/2019 | CBB | Stallings | Demoted to reserve roster | | | Before |
| 7/25/2019 | CBB | Stallings | Promoted to active roster | | | Before |
| 7/25/2019 | CBB | Stubbs -X | Demoted to reserve roster | | | Before |
| 7/25/2019 | CBB | Valaika | Signed | | | Before |
| 7/25/2019 | CBB | Valaika | Promoted to active roster | | | Before |
| 7/25/2019 | CBB | Wilson,Br | Promoted to active roster | | | Before |
| 7/25/2019 | CBB | Zimmer,B | Released | | | Before |
| 7/25/2019 | HFX | Floro -X | Demoted to reserve roster | | | Before |
| 7/25/2019 | HFX | Sadzeck | Promoted to active roster | | | Before |
| 7/25/2019 | UCA | Alford -X | Signed | | | Before |
| 7/25/2019 | UCA | Alford -X | Promoted to active roster | | | Before |
| 7/25/2019 | UCA | Barlow | Released | | | Before |
| 7/25/2019 | UCA | Bradley,B | Released | | | Before |
| 7/25/2019 | UCA | Buxton | Demoted to reserve roster | | | Before |
| 7/25/2019 | UCA | Dozier,B | Placed on disabled list | | 7/25/2019 | Before |
| 7/25/2019 | UCA | Iannetta | Promoted to active roster | | | Before |
| 7/25/2019 | UCA | Jackson,L | Promoted to active roster | | | Before |
| 7/25/2019 | UCA | Kelly,C | Demoted to reserve roster | | | Before |
| 7/25/2019 | UCA | Marshall | Promoted to active roster | | | Before |
| 7/25/2019 | UCA | Mejias-Brean -X | Signed | | | Before |
| 7/25/2019 | UCA | Mejias-Brean -X | Promoted to active roster | | | Before |
| 7/25/2019 | UCA | Pineda | Demoted to reserve roster | | | Before |
| 7/25/2019 | UCA | Sano | Demoted to reserve roster | | | Before |
| 7/25/2019 | UCA | Smith,C | Promoted to active roster | | | Before |
| 7/26/2019 | ROC | Bird,G | Promoted to active roster | | | Before |
| 7/26/2019 | ROC | Yelich | Placed on disabled list | | 7/27/2019 | Before |
| 7/27/2019 | HFX | Knapp | Promoted to active roster | | | Before |
| 7/27/2019 | HFX | Romine | Placed on disabled list | | 7/28/2019 | Before |
| 7/27/2019 | MPH | Mazara | Promoted to active roster | | | Before |
| 7/27/2019 | MPH | Tauchman | Placed on disabled list | | 7/27/2019 | Before |
| 7/27/2019 | ROC | Bird,G | Demoted to reserve roster | | | Before |
| 7/27/2019 | ROC | Russell | Promoted to active roster | | | Before |
| 7/29/2019 | NRI | Camargo | Promoted to active roster | | | Before |
| 7/29/2019 | NRI | Encarnacion | Placed on disabled list | | 7/30/2019 | Before |
| 7/29/2019 | NRI | Lowe,B | Placed on disabled list | | 7/30/2019 | Before |
| 7/29/2019 | NRI | Sadler | Promoted to active roster | | | Before |
| 7/30/2019 | BFT | Granderson | Promoted to active roster | | | Before |
| 7/30/2019 | BFT | Lopes | Demoted to reserve roster | | | Before |
| 7/30/2019 | MMC | Carpenter,M | Placed on disabled list | | 7/24/2019 | Before |
| 7/30/2019 | MMC | France | Promoted to active roster | | | Before |
| 7/30/2019 | MMC | Keller,B | Activated from disabled list | | | Before |
| 7/30/2019 | MMC | Lester | Demoted to reserve roster | | | Before |
| 7/30/2019 | NRI | Mills | Demoted to reserve roster | | | After |
| 7/30/2019 | NRI | Woodruff | Demoted to reserve roster | | | After |
| 7/30/2019 | UCA | Blackmon | Placed on disabled list | | 7/29/2019 | Before |
| 7/30/2019 | UCA | Buxton | Promoted to active roster | | | Before |
| 7/31/2019 | ALS | Alcantara,S | Placed on disabled list | | 7/26/2019 | Before |
| 7/31/2019 | ALS | Lambert | Promoted to active roster | | | Before |
| 7/31/2019 | BDM | Bass | Demoted to reserve roster | | | Before |
| 7/31/2019 | BDM | Gore | Released | | | Before |
| 7/31/2019 | BDM | Guerra,JaL | Promoted to active roster | | | Before |
| 7/31/2019 | BDM | Guilbeau | Signed | | | Before |
| 7/31/2019 | BDM | Guilbeau | Promoted to active roster | | | Before |
| 7/31/2019 | BDM | Hammer | Signed | | | Before |
| 7/31/2019 | BDM | Helsley -X | Released | | | Before |
| 7/31/2019 | BDM | Helsley -X | Demoted to reserve roster | | | Before |
| 7/31/2019 | CBB | Stubbs -X | Released | | | Before |
| 7/31/2019 | CBB | Taylor,B | Signed | | | Before |
| 7/31/2019 | CBB | Taylor,B | Demoted to reserve roster | | | Before |
| 7/31/2019 | HFX | Cave | Promoted to active roster | | | Before |
| 7/31/2019 | HFX | Estrada,T | Promoted to active roster | | | Before |
| 7/31/2019 | HFX | Rodriguez,Ro | Demoted to reserve roster | | | Before |
| 7/31/2019 | HFX | Sadzeck | Demoted to reserve roster | | | Before |
| 7/31/2019 | HFX | Smith,Joe | Promoted to active roster | | | Before |
| 7/31/2019 | HFX | Velasquez | Demoted to reserve roster | | | Before |
| 7/31/2019 | HIG | Alvarez,Y | Activated from disabled list | | | Before |
| 7/31/2019 | HIG | Holder | Promoted to active roster | | | Before |
| 7/31/2019 | HIG | Jimenez,J | Demoted to reserve roster | | | Before |
| 7/31/2019 | HIG | Magill | Demoted to reserve roster | | | Before |
| 7/31/2019 | HIG | Munoz,A | Promoted to active roster | | | Before |
| 7/31/2019 | HIG | Neuse -X | Demoted to reserve roster | | | Before |
| 7/31/2019 | MPH | Kendrick | Demoted to reserve roster | | | Before |
| 7/31/2019 | MPH | Smoak | Promoted to active roster | | | Before |
| 7/31/2019 | NRI | Hedges | Demoted to reserve roster | | | Before |
| 7/31/2019 | NRI | Hedges | Promoted to active roster | | | Before |
| 7/31/2019 | NRI | Ponce de Leon | Promoted to active roster | | | Before |
| 7/31/2019 | NRI | Ramos,W | Demoted to reserve roster | | | Before |
| 7/31/2019 | NRI | Ramos,W | Promoted to active roster | | | Before |
| 7/31/2019 | NRI | Waguespack | Promoted to active roster | | | Before |
| 7/31/2019 | ROC | Avila,A -X | Demoted to reserve roster | | | Before |
| 7/31/2019 | ROC | Bird,G | Promoted to active roster | | | Before |
| 7/31/2019 | ROC | Holaday | Promoted to active roster | | | Before |
| 7/31/2019 | ROC | Littell | Promoted to active roster | | | Before |
| 7/31/2019 | ROC | Lopez,J | Demoted to reserve roster | | | Before |
| 7/31/2019 | ROC | Miller,A | Demoted to reserve roster | | | Before |
| 7/31/2019 | ROC | Russell | Demoted to reserve roster | | | Before |
| 7/31/2019 | ROC | Suarez,R | Promoted to active roster | | | Before |
| 7/31/2019 | UCA | Alford -X | Demoted to reserve roster | | | Before |
| 7/31/2019 | UCA | Buxton | Demoted to reserve roster | | | Before |
| 7/31/2019 | UCA | Farrell | Released | | | Before |
| 7/31/2019 | UCA | Irvin | Signed | | | Before |
| 7/31/2019 | UCA | Kelly,C | Promoted to active roster | | | Before |
| 7/31/2019 | UCA | Lucas | Signed | | | Before |
| 7/31/2019 | UCA | Sano | Demoted to reserve roster | | | Before |
| 7/31/2019 | UCA | Sano | Promoted to active roster | | | Before |
| 7/31/2019 | UCA | Snell | Demoted to reserve roster | | | Before |
| 7/31/2019 | UCA | Snell | Promoted to active roster | | | Before |
| 7/31/2019 | UCA | Wood,A | Promoted to active roster | | | Before |
| 7/31/2019 | UCA | Zeuch -X | Released | | | Before |
| 7/31/2019 | UCA | Zeuch -X | Demoted to reserve roster | | | Before |
| 8/1/2019 | NRI | Braun | Activated from disabled list | | | Before |
| 8/1/2019 | NRI | Sadler | Demoted to reserve roster | | | Before |
| 8/2/2019 | BDM | Osuna,J | Activated from disabled list | | | Before |
| 8/2/2019 | BDM | Wade,L | Demoted to reserve roster | | | Before |
| 8/2/2019 | HIG | Ford | Demoted to reserve roster | | | Before |
| 8/2/2019 | HIG | Ramirez,Jo | Activated from disabled list | | | Before |
| 8/2/2019 | HIG | Ramirez,Jo | Activated from disabled list | | | Before |
| 8/2/2019 | HIG | VanMeter | Demoted to reserve roster | | | Before |
| 8/2/2019 | ROC | Buchholz | Demoted to reserve roster | | | Before |
| 8/2/2019 | ROC | Duffy,D | Demoted to reserve roster | | | Before |
| 8/2/2019 | ROC | Littell | Demoted to reserve roster | | | Before |
| 8/2/2019 | ROC | Lopez,J | Promoted to active roster | | | Before |
| 8/2/2019 | ROC | Stratton | Promoted to active roster | | | Before |
| 8/2/2019 | ROC | Ynoa,G | Demoted to reserve roster | | | Before |
| 8/2/2019 | ROC | Ynoa,G | Promoted to active roster | | | Before |
| 8/2/2019 | ROC | Ynoa,G | Promoted to active roster | | | Before |
| 8/5/2019 | BFT | Haniger | Placed on disabled list | | 8/5/2019 | Before |
| 8/5/2019 | BFT | Thomas | Promoted to active roster | | | Before |
| 8/5/2019 | MMC | Castillo,We | Promoted to active roster | | | Before |
| 8/5/2019 | MMC | Grisham | Demoted to reserve roster | | | Before |
| 8/5/2019 | MMC | Gurriel,L | Demoted to reserve roster | | | Before |
| 8/5/2019 | MMC | Lowe,N | Promoted to active roster | | | Before |
| 8/5/2019 | MMC | Naylor | Promoted to active roster | | | Before |
| 8/5/2019 | MMC | Sisco | Demoted to reserve roster | | | Before |
| 8/5/2019 | TCI | Beckham,G | Promoted to active roster | | | Before |
| 8/5/2019 | TCI | Duffy,M | Promoted to active roster | | | Before |
| 8/5/2019 | TCI | Engel | Demoted to reserve roster | | | Before |
| 8/5/2019 | TCI | Nimmo | Demoted to reserve roster | | | Before |
| 8/7/2019 | ALS | Contreras -X | Demoted to reserve roster | | | Before |
| 8/7/2019 | BFT | Hernandez,Dar | Promoted to active roster | | | Before |
| 8/7/2019 | BFT | Milone -X | Demoted to reserve roster | | | Before |
| 8/7/2019 | CBB | De Leon | Released | | | Before |
| 8/7/2019 | CBB | Zimmer,B | Signed | | | Before |
| 8/7/2019 | HFX | Lagares | Signed | | | Before |
| 8/7/2019 | HFX | Zobrist - X | Released | | | Before |
| 8/7/2019 | MPH | Keuchel -X | Demoted to reserve roster | | | Before |
| 8/7/2019 | MPH | Plutko | Activated from disabled list | | | Before |
| 8/7/2019 | NRI | Castro,J -X | Signed | | | Before |
| 8/7/2019 | NRI | Hedges | Released | | | Before |
| 8/7/2019 | NRI | Sadler | Released | | | Before |
| 8/7/2019 | UCA | Alford -X | Released | | | Before |
| 8/7/2019 | UCA | Arroyo | Signed | | | Before |
| 8/7/2019 | UCA | Fuentes | Signed | | | Before |
| 8/7/2019 | UCA | Gore | Signed | | | Before |
| 8/7/2019 | UCA | Mejias-Brean -X | Released | | | Before |
| 8/7/2019 | UCA | Mejias-Brean -X | Demoted to reserve roster | | | Before |
| 8/7/2019 | UCA | Reyes,A | Released | | | Before |
| 8/7/2019 | UCA | Sano | Promoted to active roster | | | Before |
| 1/26/2020 | ALS | Anderson,Bre | Traded away | BUR | | After |
| 1/26/2020 | ALS | Correa | Traded away | BUR | | After |
| 1/26/2020 | ALS | Cruz | Acquired via trade | BUR | | After |
| 1/26/2020 | CBB | German | Traded away | BUR | | After |
| 1/26/2020 | CBB | McCann,J | Acquired via trade | BUR | | After |
| 1/26/2020 | NRI | Cooper | Traded away | CCC | | After |
| 1/26/2020 | NRI | Donaldson | Traded away | CCC | | After |
| 1/26/2020 | NRI | Morton | Acquired via trade | CCC | | After |
| 1/26/2020 | NRI | Seager,C | Traded away | FOR | | After |
| 1/26/2020 | NRI | Sogard | Acquired via trade | FOR | | After |
| 1/26/2020 | NRI | Winker | Traded away | CCC | | After |
| 1/27/2020 | HIG | Keuchel -X | Traded away | MPH | | After |
| 1/27/2020 | HIG | Walker,C | Acquired via trade | MPH | | After |
| 1/27/2020 | MPH | Keuchel -X | Acquired via trade | HIG | | After |
| 1/27/2020 | MPH | Walker,C | Traded away | HIG | | After |
| 2/7/2020 | NRI | Desmond | Traded away | BUR | | After |
| 2/28/2020 | BDM | Fowler | Traded away | BUR | | After |
| 2/28/2020 | BDM | Straw | Acquired via trade | BUR | | After |
| 2/28/2020 | BFT | Barnhart | Acquired via trade | WDJ | | After |
| 2/28/2020 | CBB | Encarnacion | Traded away | NRI | | After |
| 2/28/2020 | CBB | Goodwin | Acquired via trade | NRI | | After |
| 2/28/2020 | CBB | Hedges | Traded away | NRI | | After |
| 2/28/2020 | CBB | Moreland | Acquired via trade | NRI | | After |
| 2/28/2020 | NRI | Encarnacion | Acquired via trade | CBB | | After |
| 2/28/2020 | NRI | Goodwin | Traded away | CBB | | After |
| 2/28/2020 | NRI | Hedges | Acquired via trade | CBB | | After |
| 2/28/2020 | NRI | Moreland | Traded away | CBB | | After |