| | | Friday, December 28th, 2012 | | Signed Charlie Sutton to a minor league contract with a signing bonus of $900,000. |
| Wednesday, December 26th, 2012 | | Signed free agent MR Ron Francis to a 2-year contract worth a total of $1,400,000. | | Signed free agent MR Wayne Barham to a 2-year contract worth a total of $1,500,000. | | Signed free agent 1B António Paz to a 1-year contract worth a total of $650,000. | | Signed free agent 1B Javier Torres to a minor league contract. | | Signed free agent RF Clarence Wicklund to a minor league contract. | | Signed free agent 3B Kajoshaj Kadare to a minor league contract. | | Signed free agent MR Lee Barker to a minor league contract. | | Signed free agent C Jeff Schuman to a minor league contract. |
| Sunday, December 23rd, 2012 | | Signed Francisco Sáenz to a minor league contract with a signing bonus of $600,000. |
| Thursday, December 20th, 2012 | | Signed Dale Thomas to a minor league contract with a signing bonus of $6,500,000. |
| Monday, December 17th, 2012 | | Drafted SP Dale Thomas in the 2012 first-year player draft (Round 1, Pick 1, 1st overall pick). | | Drafted LF Charlie Sutton in the 2012 first-year player draft (Round 2, Pick 1, 25th overall pick). | | Drafted 2B Francisco Sáenz in the 2012 first-year player draft (Round 3, Pick 1, 49th overall pick). | | Drafted SS Henry Richardson in the 2012 first-year player draft (Round 4, Pick 1, 73rd overall pick). | | Drafted LF Herb McGillis in the 2012 first-year player draft (Round 5, Pick 1, 97th overall pick). | | Drafted C Dominique Lepage in the 2012 first-year player draft (Round 6, Pick 1, 121st overall pick). | | Drafted 3B Garrison Manuel in the 2012 first-year player draft (Round 7, Pick 1, 145th overall pick). | | Drafted RF Steve Bader in the 2012 first-year player draft (Round 8, Pick 1, 169th overall pick). | | Drafted RF Josh Harris in the 2012 first-year player draft (Round 9, Pick 1, 193rd overall pick). | | Drafted 3B Shotaro Takahashi in the 2012 first-year player draft (Round 10, Pick 1, 217th overall pick). | | Drafted 2B Jaime Salazar in the 2012 first-year player draft (Round 11, Pick 1, 241st overall pick). | | Drafted 1B Dave Pineau in the 2012 first-year player draft (Round 12, Pick 1, 265th overall pick). |
| Tuesday, December 11th, 2012 | | Signed SS Joe Frost to a 4-year contract extension worth a total of $6,000,000. |
| Wednesday, November 21st, 2012 | | Designated 2B Leonard Dostie for assignment. | | 2B Steve Lewis received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Ronald Appleby received a 1-year contract through automatic renewal worth a total of $510,000. | | LF Colt Smith received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Jason Hawkins received a 1-year contract through automatic renewal worth a total of $510,000. | | CF Anthony Willis received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Lou Watts received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Jeff Davis received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Mark Carver received a 1-year contract through automatic renewal worth a total of $510,000. | | C Guillermo Velázquez becomes a free-agent. |
| Sunday, November 18th, 2012 | | LF Rich Fraser received a 1-year contract through arbitration worth a total of $750,000. |
| Thursday, November 15th, 2012 | | Signed free agent C António Rojas to a 4-year contract worth a total of $7,000,000. |
| Monday, November 12th, 2012 | | Placed MR Lou Watts on the 40-man roster. | | Placed MR Lou Watts on the active roster. |
| Wednesday, November 7th, 2012 | | Signed 2B Leonard Dostie to a 3-year contract extension worth a total of $3,000,000. |
| Tuesday, November 6th, 2012 | | Signed free agent 1B Alejandro Bautista to a minor league contract. |
| Friday, November 2nd, 2012 | | Signed manager Matt Hunt to a 1-year, $750,000 per year contract. |
| Thursday, November 1st, 2012 | | Signed MR Chip Sawyer to a 2-year contract extension worth a total of $2,000,000. |
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