 |
Player | Position | Former Team | New Team | Transaction date | Notes | |
| 1. | Benoit, Joaquin | RP | TB | DET | 11/19/10 | Three-year contract | |
| 2. | Betemit, Wilson | 3B | DET | BAL | 1/24/12 | Two-year deal with vesting option | |
| 3. | Coke, Phil | RP | NYY | DET | 12/09/09 | Part of three-team trade between NYY, DET, ARI | |
| 4. | Dolsi, Freddy | RP | DET | CWS | 12/18/09 | Claimed off waivers | |
| 5. | Dotel, Octavio | RP | DET | DET | 10/30/12 | Club option exercised | |
| 6. | Gonzalez, Enrique | RP | DET | --- | --- | Minor league free agent | |
| 7. | Hill, Shawn | RP | TOR | DET | 11/24/12 | Minor league contract | |
| 8. | Martinez, Victor | C | BOS | DET | 11/26/10 | Four-year contract | |
| 9. | Ryan, Dusty | C | DET | SD | 12/21/09 | Acquired for player to be named or cash | |
| 10. | Scherzer, Max | SP | ARI | DET | 12/09/09 | Part of three-team trade between NYY, DET, ARI | |
| 11. | Schlereth, Daniel | RP | DET | BAL | 12/19/12 | Minor league contract | |
| 12. | Thomas, Brad | RP | DET | --- | --- | Minor league free agent | |
| 13. | Valverde, Jose | RP | DET | --- | --- | --- | |
| 14. | Waddell, Jason | RP | DET | DET | 1/14/10 | Minor League free agent | |
| 15. | Washburn, Jarrod | SP | DET | --- | --- | --- | |
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