| | | Saturday, August 22nd, 2015 | | Placed LF Jesús Chávez on the 15-day disabled list. | | Placed MR Rod Page on the 60-day disabled list. |
| Friday, August 14th, 2015 | | Signed Randolph Donahue to a minor league contract with a signing bonus of $1,410,000. | | Signed Joe Myers to a minor league contract with a signing bonus of $230,000. | | Failed to sign 23rd round draft pick Dave Wright. |
| Wednesday, August 12th, 2015 | | Signed CL Roger Perry to a 1-year contract extension worth a total of $1,200,000. |
| Saturday, August 8th, 2015 | | Placed RF Felipe González on the 15-day disabled list. |
| Saturday, July 25th, 2015 | | Placed SP Francisco Romero on the 60-day disabled list. |
| Saturday, July 18th, 2015 | | Signed free agent 1B Miguel Morales to a 1-year contract worth a total of $800,000. |
| Tuesday, June 30th, 2015 | | Signed Bryan Livingston to a minor league contract with a signing bonus of $300,000. |
| Friday, June 26th, 2015 | | Signed Daniel Torres to a minor league contract with a signing bonus of $200,000. |
| Wednesday, June 24th, 2015 | | Signed Sean Steevien to a minor league contract with a signing bonus of $1,470,000. |
| Tuesday, June 23rd, 2015 | | Signed Anthony Elliott to a minor league contract with a signing bonus of $150,000. |
| Sunday, June 21st, 2015 | | Signed Juan Velázquez to a minor league contract with a signing bonus of $150,000. |
| Tuesday, April 28th, 2015 | | Placed 3B Joe Cooper on irrevocable waivers. |
| Monday, December 29th, 2014 | | Placed MR John Shannon on the active roster. |
| Sunday, December 28th, 2014 | | Signed free agent MR John Shannon to a 2-year contract worth a total of $5,740,000. |
| Wednesday, December 17th, 2014 | | Signed free agent MR Katsuhito Ogawa to a 1-year contract worth a total of $660,000. |
| Tuesday, November 18th, 2014 | | MR Phillip Lundgren received a 1-year contract through automatic renewal worth a total of $400,000. | | 2B Soetsu Watanabe becomes a free-agent. | | LF Jesús Chávez received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Francisco Romero received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Tyson Newton received a 1-year contract through automatic renewal worth a total of $400,000. | | CF William Russell received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Erik Sparks received a 1-year contract through automatic renewal worth a total of $400,000. | | CF Joe Workman received a 1-year contract through automatic renewal worth a total of $400,000. | | RF Felipe González received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Gabriel Núñez received a 1-year contract through automatic renewal worth a total of $400,000. | | C John Stanley received a 1-year contract through automatic renewal worth a total of $400,000. | | LF Jimmy Heller received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Rod Page received a 1-year contract through automatic renewal worth a total of $400,000. | | LF Octávio Pérez becomes a free-agent. | | CF Alfredo Orosco received a 1-year contract through automatic renewal worth a total of $400,000. | | RF Gabriel RamÃrez received a 1-year contract through automatic renewal worth a total of $400,000. | | CL John Williams received a 1-year contract through automatic renewal worth a total of $400,000. | | C Rodrigo Mercado received a 1-year contract through automatic renewal worth a total of $400,000. | | LF Raúl OrtÃz received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Luis Aguilar received a 1-year contract through automatic renewal worth a total of $400,000. | | Traded 26-year-old center fielder Alfredo Orosco, 24-year-old left fielder Jimmy Heller, 28-year-old starting pitcher Matt Constable and 23-year-old minor league starting pitcher Jesse Starks to the Hot Coffee Steamers, getting 31-year-old starting pitcher Jarrod Greer and 31-year-old starting pitcher Alfonso Cardona in return. | | Placed SP Alfonso Cardona on the active roster. | | Placed SP Jarrod Greer on the active roster. |
| Saturday, November 15th, 2014 | | 3B Joe Cooper received a 1-year contract through arbitration worth a total of $600,000. | | 2B Albert Eshelby received a 1-year contract through arbitration worth a total of $2,100,000. | | SP Matt Constable received a 1-year contract through arbitration worth a total of $600,000. | | SP Lorenzo Torres received a 1-year contract through arbitration worth a total of $600,000. | | 1B Roger Carson received a 1-year contract through arbitration worth a total of $4,900,000. | | SS Júlio OrtÃz received a 1-year contract through arbitration worth a total of $600,000. | | MR Rubén Estrada received a 1-year contract through arbitration worth a total of $700,000. | | MR Jack Melton received a 1-year contract through arbitration worth a total of $600,000. |
| Thursday, November 6th, 2014 | | Signed SP Luis Ayala to a 3-year contract extension worth a total of $2,470,000. |
| Saturday, November 1st, 2014 | | Signed scouting director Paul Tyler to a 5-year, $280,000 per year contract. |
| Saturday, October 25th, 2014 | | Scouting Director John Rowe leaves the team, his contract was not renewed. |
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