| | | Tuesday, October 8th, 2013 | | Signed free agent SP Reynaldo Martínez to a 5-year contract worth a total of $66,750,000. |
| Sunday, August 25th, 2013 | | Signed RF Ricardo Marquis to a 2-year contract extension worth a total of $40,000,000. |
| Tuesday, July 23rd, 2013 | | Signed C Elroy Anderson to a 2-year contract extension worth a total of $2,850,000. | | Signed CL Marshall Olsen to a 3-year contract extension worth a total of $9,000,000. |
| Monday, July 8th, 2013 | | 2B Wade Boone was designated for assignment and placed on waivers. |
| Saturday, March 16th, 2013 | | Placed C Freddy Castillo on the 14-day disabled list, retroactive to 03/13/2013. | | Purchased the contract of C Bob Pope from Triple A Joplin. |
| Monday, January 21st, 2013 | | Signed Tetsu Nishimura to a minor league contract with a signing bonus of $2,500,000. |
| Friday, January 18th, 2013 | | Signed Millard Moore to a minor league contract with a signing bonus of $220,000. |
| Thursday, January 17th, 2013 | | Signed scouting director Emílio Parra to a 4-year, $275,000 per year contract. |
| Tuesday, January 8th, 2013 | | Signed Kazuhiko Kanno to a minor league contract with a signing bonus of $2,750,000. |
| Friday, January 4th, 2013 | | Signed Guillermo Herrera to a minor league contract with a signing bonus of $400,000. |
| Thursday, January 3rd, 2013 | | Signed Jonathan Knight to a minor league contract with a signing bonus of $175,000. |
| Thursday, December 20th, 2012 | | Signed Chet Boyd to a minor league contract with a signing bonus of $950,000. |
| Wednesday, November 21st, 2012 | | 2B Armando Rodríguez received a 1-year contract through automatic renewal worth a total of $3,800,000. | | SS Stephen Everett received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Rodney Armstrong received a 1-year contract through automatic renewal worth a total of $510,000. | | C Freddy Castillo received a 1-year contract through automatic renewal worth a total of $510,000. | | RF Jorge Rivera received a 1-year contract through automatic renewal worth a total of $500,000. | | LF Lawrence Fox received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Robert Cates received a 1-year contract through automatic renewal worth a total of $510,000. | | CL António González received a 1-year contract through automatic renewal worth a total of $510,000. | | CL António Rodríguez received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Ray Clay received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Fabrizio Palgani received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Johnny Hudson received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Howard Lawrence received a 1-year contract through automatic renewal worth a total of $510,000. | | 1B Jesús Cruz received a 1-year contract through automatic renewal worth a total of $500,000. | | CL Jorge Magana received a 1-year contract through automatic renewal worth a total of $500,000. | | SP José Ramírez received a 1-year contract through automatic renewal worth a total of $510,000. | | 3B Lucas Smith received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Rafael Vega received a 1-year contract through automatic renewal worth a total of $500,000. | | CL Jim Davis received a 1-year contract through automatic renewal worth a total of $510,000. | | LF Jonathan Strobel received a 1-year contract through automatic renewal worth a total of $510,000. |
| Sunday, November 18th, 2012 | | SP Zach Tate received a 1-year contract through arbitration worth a total of $750,000. |
| Sunday, November 4th, 2012 | | Signed DH Scott Walters to a 1-year contract extension worth a total of $750,000. |
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