| | | Monday, December 24th, 2012 | | Signed John Whitehead to a minor league contract with a signing bonus of $1,070,000. |
| Monday, December 17th, 2012 | | Drafted LF John Whitehead in the 2012 first-year player draft (Round 1, Pick 18, 18th overall pick). | | Drafted C Yves Faucher in the 2012 first-year player draft (Round 2, Pick 18, 42nd overall pick). | | Drafted SP Mark Miller in the 2012 first-year player draft (Round 3, Pick 18, 66th overall pick). | | Drafted SP Justin Keller in the 2012 first-year player draft (Round 4, Pick 18, 90th overall pick). | | Drafted RF Pat Carroll in the 2012 first-year player draft (Round 5, Pick 18, 114th overall pick). | | Drafted 3B Jun'ichi Ogura in the 2012 first-year player draft (Round 6, Pick 18, 138th overall pick). | | Drafted CL Bill Cunningham in the 2012 first-year player draft (Round 7, Pick 18, 162nd overall pick). | | Drafted MR Mike Carter in the 2012 first-year player draft (Round 8, Pick 18, 186th overall pick). | | Drafted MR Yodo Nakashima in the 2012 first-year player draft (Round 9, Pick 18, 210th overall pick). | | Drafted SP Shunso Oyama in the 2012 first-year player draft (Round 10, Pick 18, 234th overall pick). | | Drafted CF Jeremy Sutton in the 2012 first-year player draft (Round 11, Pick 18, 258th overall pick). | | Drafted SP António Nevárez in the 2012 first-year player draft (Round 12, Pick 18, 282nd overall pick). |
| Wednesday, November 21st, 2012 | | SS Curt Dempsey received a 1-year contract through automatic renewal worth a total of $510,000. | | 2B Andy Reynolds received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Eduardo Muńóz received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Melvin Brown received a 1-year contract through automatic renewal worth a total of $510,000. | | CF Ryan Taylor received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Marc Murphy received a 1-year contract through automatic renewal worth a total of $510,000. | | C Alonso Beltrán received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Michael Whitney becomes a free-agent. | | MR Jim Davis becomes a free-agent. | | SP Jeff O'Macken becomes a free-agent. | | MR Bob Hendricks received a 1-year contract through automatic renewal worth a total of $500,000. | | MR Chris Neal received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Henry Bell received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Walt Dobson received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Francis Green received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Héctor Huertas received a 1-year contract through automatic renewal worth a total of $500,000. | | 2B Alec Garrett received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Pedro Vega received a 1-year contract through automatic renewal worth a total of $510,000. |
| Sunday, November 18th, 2012 | | SP Jorge Cruz received a 1-year contract through arbitration worth a total of $3,400,000. | | SP Troy Baker received a 1-year contract through arbitration worth a total of $3,080,000. | | MR Ron Cutter received a 1-year contract through arbitration worth a total of $2,420,000. | | CF Frank Johnston received a 1-year contract through arbitration worth a total of $750,000. | | 1B Francisco Concepción received a 1-year contract through arbitration worth a total of $750,000. | | SP Kevin Black received a 1-year contract through arbitration worth a total of $1,870,000. | | MR Alejandro Herrera received a 1-year contract through arbitration worth a total of $750,000. |
| Friday, November 2nd, 2012 | | Signed C Steve McCoy to a minor league contract extension. | | Signed C Roberto Gonzáles to a minor league contract extension. |
| Thursday, November 1st, 2012 | | Signed 3B Gregory Wilson to a minor league contract extension. | | Signed 1B Ted Nichols to a minor league contract extension. | | Signed MR Ben Jones to a minor league contract extension. |
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