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Player | Position | Former Team | New Team | Transaction date | Notes | |
| 1. | Wheeler, Dan | SP | CLE | KC | 12/11/12 | Minor league contract | |
| 2. | Bannister, Brian | SP | KC | --- | --- | Signed with the Tokyo Giants of Nippon Professional Baseball | |
| 3. | Betancourt, Yuniesky | SS | KC | PHI | 1/28/13 | Minor league contract | |
| 4. | Butler, Billy | 1B | KC | KC | 1/22/11 | Agrees to four-year extension. | |
| 5. | Chen, Bruce | SP | KC | KC | 11/23/11 | Two-year contract | |
| 6. | Lerew, Anthony | RP | KC | OAK | 11/16/10 | Minor league contract | |
| 7. | Rupe, Josh | RP | KC | BAL | 11/29/10 | Minor league contract | |
| 8. | Mazzaro, Vin | P | OAK | KC | 11/10/10 | Traded with Justin Marks for David DeJesus. | |
| 9. | Sherrill, George | RP | SEA | KC | 12/07/12 | Minor league contract | |
| 10. | Nady, Xavier | OF | SF | KC | 12/14/12 | Minor league contract | |
| 11. | Feliz, Pedro | 3B | STL | KC | 2/02/11 | Minor league contract | |
| 12. | Francoeur, Jeff | OF | TEX | KC | 12/08/10 | One year with mutual option for 2012 | |
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