| | | Sunday, December 29th, 2013 | | Signed Reynaldo Soto to a minor league contract with a signing bonus of $280,000. |
| Friday, December 27th, 2013 | | Signed Greg Miller to a minor league contract with a signing bonus of $140,000. |
| Thursday, December 26th, 2013 | | Signed Jeff Everhart to a minor league contract with a signing bonus of $1,000,000. |
| Monday, December 23rd, 2013 | | Signed Vadim Pejemsky to a minor league contract with a signing bonus of $130,000. |
| Thursday, December 19th, 2013 | | Signed Franck Devos to a minor league contract with a signing bonus of $140,000. |
| Monday, December 9th, 2013 | | Signed free agent SP Dave Krause to a 3-year contract worth a total of $43,650,000. |
| Sunday, December 8th, 2013 | | Signed free agent SP Ricardo Medine to a 1-year contract worth a total of $800,000. |
| Sunday, December 1st, 2013 | | Drafted SP Ken Forley in the 2013 Rule 5 Draft (Round 1, Pick 19, 19th overall Pick), from the Maple Marauders. |
| Thursday, November 21st, 2013 | | SP Aurelio Ramírez received a 1-year contract through automatic renewal worth a total of $510,000. | | C Francisco Solano received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Ángel Galindo received a 1-year contract through automatic renewal worth a total of $500,000. | | MR Ramiro Ortega received a 1-year contract through automatic renewal worth a total of $510,000. | | MR António Aguirre received a 1-year contract through automatic renewal worth a total of $510,000. | | C Craig Wall received a 1-year contract through automatic renewal worth a total of $510,000. | | MR António Rodríguez received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Tom Bray received a 1-year contract through automatic renewal worth a total of $500,000. | | MR Doug Smith received a 1-year contract through automatic renewal worth a total of $510,000. | | SP David Cole received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Dimitrie Serban becomes a free-agent. | | CF Justin Wallace received a 1-year contract through automatic renewal worth a total of $510,000. | | CL Carl Jacobsen received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Peter Barrett received a 1-year contract through automatic renewal worth a total of $500,000. | | 1B Doug King received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Todd Blanchard received a 1-year contract through automatic renewal worth a total of $750,000. |
| Monday, November 18th, 2013 | | CL Ánibal Machado received a 1-year contract through arbitration worth a total of $6,250,000. | | MR Jarrod Randolph received a 1-year contract through arbitration worth a total of $1,300,000. | | SS Martin Bryan received a 1-year contract through arbitration worth a total of $750,000. | | SP Zach Tate received a 1-year contract through arbitration worth a total of $787,500. | | RF Cedric Young received a 1-year contract through arbitration worth a total of $750,000. |
| Friday, November 1st, 2013 | | Signed LF Willis Parks to a 3-year contract extension worth a total of $11,000,000. |
| Thursday, October 31st, 2013 | | Signed hitting coach Dale Ware to a 5-year, $200,000 per year contract. |
| Monday, October 28th, 2013 | | Hitting Coach Steve Fox leaves the team, his contract was not renewed. | | Voided the team option year(s) of SP Alejandro Cabrera. |
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