Transactions
| Date | Player | Transactions |
| 2/17 | Jared Hughes, P | Signed to a Minor League Contract |
| 2/17 | Francis Martes, P | Suspension Announced By League (162 games for violating MLB drug program) |
| 2/17 | Francis Martes, P | Starting to Serve Illegal Substance Suspension |
| 1/16 | Dean Deetz, P | Outrighted to Minors |
| 1/16 | George Springer, RF | Signed ( 2020)(avoids arbitration) |
| 1/10 | Carlos Correa, SS | Signed ( 2020)(avoids arbitration) |
| 1/10 | Chris Devenski, P | Signed ( 2020)(avoids arbitration) |
| 1/10 | Roberto Osuna, P | Signed ( 2020)(avoids arbitration) |
| 1/10 | Brad Peacock, P | Signed ( 2020)(avoids arbitration) |
| 1/9 | Dean Deetz, P | Designated for Assignment |
| 1/9 | Austin Pruitt, P | Traded Tampa Bay (for P Peyton Battenfield, 3-player deal) |
| 12/23 | Martín Maldonado, C | Signed as Free Agent ( 2020-2021)(two-year contract) |
| 12/19 | Joe Smith, P | Signed as Free Agent ( 2020-2021)(two-year contract) |
| 12/13 | Lance McCullers Jr., P | Signed ( 2020)(avoids arbitration) |
| 12/5 | Blake Taylor, P | Traded NY Mets (w\OF Kenedy Corona for OF Jake Marisnick) |
| 12/2 | Joe Biagini, P | Signed ( 2020)(avoids arbitration) |
| 12/2 | Aaron Sanchez, P | Free Agent - No Contract Offer (non-tendered) |
| 11/26 | Dustin Garneau, C | Signed as Free Agent ( 2020)(one-year contract) |
| 11/20 | Cristian Javier, P | Purchased From Minors |
| 11/20 | Taylor Jones, 1B | Purchased From Minors |
| 11/20 | Enoli Paredes, P | Purchased From Minors |
| 11/20 | Nivaldo Rodriguez, P | Purchased From Minors |
| 11/4 | Gerrit Cole, P | Tendered Qualifying Offer (declined) |
| 11/4 | Kent Emanuel, P | Purchased From Minors |
| 11/4 | Lance McCullers Jr., P | Removed From 60-Day IL (Recovery from right elbow surgery) |
| 10/31 | Robinson Chirinos, C | Declared Free Agency |
| 10/31 | Gerrit Cole, P | Declared Free Agency |
| 10/31 | Will Harris, P | Declared Free Agency |
| 10/31 | Martín Maldonado, C | Declared Free Agency |
| 10/31 | Collin McHugh, P | Declared Free Agency |
| 10/31 | Wade Miley, P | Declared Free Agency |
| 10/31 | Héctor Rondón, P | Declared Free Agency |
| 10/31 | Joe Smith, P | Declared Free Agency |
Last updated Feb. 19, 7:17 P.M. ET
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