| | | Wednesday, August 14th, 2013 | | Failed to sign 1st round draft pick Alfredo Morales. | | Failed to sign supplemental 1st round draft pick Floyd Murphy. |
| Saturday, July 6th, 2013 | | Signed Duane Carlson to a minor league contract with a signing bonus of $2,330,000. |
| Wednesday, June 26th, 2013 | | Signed Ken Green to a minor league contract with a signing bonus of $290,000. |
| Monday, June 24th, 2013 | | Signed Ronald Riehl to a minor league contract with a signing bonus of $310,000. | | Signed Máximo Silva to a minor league contract with a signing bonus of $220,000. | | Signed Theron Gordon to a minor league contract with a signing bonus of $190,000. | | Demoted C Tony Lucero to Triple A Garland. |
| Thursday, June 20th, 2013 | | Signed Jack Frizz to a minor league contract with a signing bonus of $1,460,000. |
| Tuesday, June 18th, 2013 | | Signed Juan Luna to a minor league contract with a signing bonus of $480,000. | | Signed Mario Reyes to a minor league contract with a signing bonus of $290,000. |
| Saturday, March 23rd, 2013 | | Placed SS Liu-liang Tang on the 15-day disabled list. |
| Saturday, March 9th, 2013 | | Placed 1B Manuel Franco on the 15-day disabled list. |
| Saturday, February 23rd, 2013 | | Purchased the contract of CL José Ramos from Triple A Garland. |
| Wednesday, February 20th, 2013 | | Signed free agent LF Oginga Tajamali to a 2-year contract worth a total of $5,530,000. | | Placed LF Oginga Tajamali on the active roster. |
| Sunday, February 17th, 2013 | | Signed free agent SP Earl Phelps to a 2-year contract worth a total of $7,000,000. | | Placed SP Earl Phelps on the active roster. |
| Friday, December 21st, 2012 | | Signed free agent MR Jack Hawkins to a 2-year contract worth a total of $7,060,000. | | Placed MR Jack Hawkins on the active roster. |
| Saturday, December 15th, 2012 | | Placed CL Shaun Margill on the active roster. |
| Sunday, November 18th, 2012 | | RF Sam Smart becomes a free-agent. | | 2B Max Little becomes a free-agent. | | MR Jesús MartÃnez received a 1-year contract through automatic renewal worth a total of $400,000. | | CL Michael Vaughan received a 1-year contract through automatic renewal worth a total of $400,000. | | 3B Ron O'Gahan becomes a free-agent. | | SP Travis Martin received a 1-year contract through automatic renewal worth a total of $400,000. | | C Tu-chin Kim received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Leonard Ellis received a 1-year contract through automatic renewal worth a total of $400,000. | | CF Alfonso MartÃnez received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Donnie Sanders received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Randy Walters received a 1-year contract through automatic renewal worth a total of $400,000. | | 2B José Sandoval received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Fred Sheffield received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Alan Smith becomes a free-agent. | | 2B Alfonso Miranda received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Will Carson received a 1-year contract through automatic renewal worth a total of $400,000. | | CL Tim Houston becomes a free-agent. |
| Thursday, November 15th, 2012 | | SP António Mateo received a 1-year contract through arbitration worth a total of $3,059,000. | | CF Ross Graham becomes a free-agent. | | 1B Manuel Franco received a 1-year contract through arbitration worth a total of $1,605,000. | | C Tony Lucero received a 1-year contract through arbitration worth a total of $600,000. | | MR Gilbert Riddle received a 1-year contract through arbitration worth a total of $600,000. | | 2B Pat White received a 1-year contract through arbitration worth a total of $1,910,000. | | CF Zach Raymond received a 1-year contract through arbitration worth a total of $3,532,500. | | 3B Gerardo López received a 1-year contract through arbitration worth a total of $1,420,000. | | DH Mike Funk received a 1-year contract through arbitration worth a total of $3,800,000. | | SS Liu-liang Tang received a 1-year contract through arbitration worth a total of $2,437,500. | | SP José Fernández received a 1-year contract through arbitration worth a total of $600,000. | | LF Jorge Vesa received a 1-year contract through arbitration worth a total of $1,675,000. | | SP Jing-bo Qiu received a 1-year contract through arbitration worth a total of $740,000. | | MR Vicente Chávez becomes a free-agent. |
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