 |
Player | Position | Former Team | New Team | Transaction date | Notes | |
| 1. | Ohman, Will | RP | CIN | WSH | 2/11/13 | Minor league contract | |
| 2. | DeRosa, Mark | 3B | WSH | TOR | 1/22/13 | One year with a club option for 2014 | |
| 3. | Ankiel, Rick | OF | WSH | HOU | 1/17/13 | Minor league contract | |
| 4. | Soriano, Rafael | RP | NYY | WSH | 1/17/13 | Two years with a vesting option for 2015 | |
| 5. | LaRoche, Adam | 1B | WSH | WSH | 1/08/13 | Two years with a mutual option for 2015 | |
| 6. | Gonzalez, Michael | RP | WSH | MIL | 1/07/13 | One-year contract | |
| 7. | Jackson, Edwin | SP | WSH | CHC | 1/02/13 | Four-year contract | |
| 8. | Cora, Alex | 3B | WSH | STL | 2/06/12 | Minor league contract | |
| 9. | Slaten, Doug | RP | WSH | PIT | 1/17/12 | Minor league contract | |
| 10. | Cameron, Mike | OF | MIA | WSH | 12/19/11 | Minor league contract | |
| 11. | Nix, Laynce | OF | WSH | PHI | 12/08/11 | Agreed to two-year contract | |
| 12. | Olsen, Scott | SP | WSH | PIT | 12/10/10 | One year with a club option for 2012 | |
| 13. | Van Every, Jonathan | CF | BOS | WSH | 12/10/10 | Minor league contract | |
| 14. | Villone, Ron | RP | WSH | WSH | 2/17/10 | Minor league contract | |
| 15. | Estrada, Marco | RP | WSH | MIL | 2/03/10 | Claimed off waivers | |
| 16. | Padilla, Jorge | OF | WSH | TOR | 1/07/10 | Minor League contract | |
| 17. | Bruntlett, Eric | IF | PHI | WSH | 12/28/09 | Minor League contract | |
| 18. | Whitesell, Josh | 1B | ARI | WSH | 12/28/09 | Minor League contract | |
| 19. | Guardado, Eddie | RP | TEX | WSH | 12/26/09 | Minor League contract | |
| 20. | Rivera, Saul | RP | WSH | CLE | 12/21/09 | Minor League contract | |
| 21. | Burke, Jamie | C | WSH | WSH | 12/15/09 | Minor League contract | |
| 22. | Speier, Ryan | RP | COL | WSH | 12/12/09 | Minor League contract | |
| 23. | Owens, Jerry | OF | SEA | WSH | 12/08/09 | Minor League contract | |
| 24. | Rodriguez, Ivan | C | WSH | --- | --- | --- | |
| 25. | Stairs, Matt | 1B | WSH | --- | --- | Retired | |
| 26. | Tavarez, Julian | RP | WSH | --- | --- | Released | |
| 27. | Walker, Tyler | RP | WSH | --- | --- | Released | |
| 28. | Wang, Chien-Ming | SP | WSH | --- | --- | --- | |
| 29. | Young, Dmitri | 1B | WSH | --- | --- | Announced retirement, March 2010 | |
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