| | | | | | | | | | |  | Major Transactions |
| | | | Tuesday, September 18th, 2018 | | Signed Scouting Director G. Collins to a 5-year contract extension. |
| Sunday, September 16th, 2018 | | Placed LF R. Nichols on the active roster. | | Activated LF R. Nichols from the 60-day disabled list. | | Released LF B. Brooks. |
| Monday, September 3rd, 2018 | | Signed RF R. Bilbrey to a 2-year contract extension worth a total of $7,140,000. |
| Tuesday, May 1st, 2018 | | Placed LF R. Nichols on the 60-day disabled list. | | MR M. Toyoharu was designated for assignment and placed on waivers. | | Purchased the contract of SP F. Thomas from Triple A Jersey City. |
| Tuesday, April 17th, 2018 | | Signed free agent LF R. Nichols to a 3-year contract worth a total of $7,760,000. | | Signed team doctor S. Vaughan to a 1-year, $400,000 per year contract. |
| Monday, January 15th, 2018 | | Signed free agent SP A. Koepp to a 2-year contract worth a total of $2,700,000. | | Placed SP A. Koepp on the active roster. |
| Monday, January 8th, 2018 | | Placed SP E. Scull on the active roster. |
| Wednesday, December 27th, 2017 | | Signed free agent SP E. Scull to a 2-year contract worth a total of $4,060,000. |
| Monday, December 11th, 2017 | | Placed CF L. Machen on the 15-day disabled list. | | Placed MR D. Beene on the active roster. | | Placed SS C. Rasch on the active roster. | | Activated SS C. Rasch from the disabled list. |
| Saturday, December 9th, 2017 | | Signed free agent CF L. Machen to a 3-year contract worth a total of $8,190,000. |
| Friday, December 1st, 2017 | | Drafted SP R. Castro in the 2017 rule 5 draft (Pick 3, Round 1, 3rd overall Pick). |
| Sunday, November 26th, 2017 | | Signed free agent MR D. Beene to a 2-year contract worth a total of $800,000. |
| Thursday, November 2nd, 2017 | | 2B R. Perez becomes a free-agent. | | C D. Wolverton becomes a free-agent. | | C R. Heitz received a 1-year contract through automatic renewal worth a total of $300,000. | | SP K. Byers becomes a free-agent. | | MR T. Prahl received a 1-year contract through automatic renewal worth a total of $300,000. | | MR E. Torres received a 1-year contract through automatic renewal worth a total of $300,000. | | CL E. Moyer received a 1-year contract through automatic renewal worth a total of $300,000. | | SP A. Taub received a 1-year contract through automatic renewal worth a total of $300,000. | | 1B J. Jaquez received a 1-year contract through automatic renewal worth a total of $300,000. | | 2B J. Dutil received a 1-year contract through automatic renewal worth a total of $300,000. | | 1B J. Guerra received a 1-year contract through automatic renewal worth a total of $300,000. | | MR D. Walker received a 1-year contract through automatic renewal worth a total of $300,000. | | LF J. Barinaga received a 1-year contract through automatic renewal worth a total of $300,000. | | SS C. Rasch received a 1-year contract through automatic renewal worth a total of $300,000. | | LF S. Banton becomes a free-agent. |
| Monday, October 30th, 2017 | | 1B M. Alcazar received a 1-year contract through arbitration worth a total of $2,090,700. | | MR T. Regis received a 1-year contract through arbitration worth a total of $300,000. | | 3B R. Campion received a 1-year contract through arbitration worth a total of $1,214,400. | | SP M. Friday received a 1-year contract through arbitration worth a total of $1,856,100. | | MR M. Salcido received a 1-year contract through arbitration worth a total of $627,900. | | MR M. Toyoharu received a 1-year contract through arbitration worth a total of $300,000. |
| Tuesday, October 10th, 2017 | | Team Trainer E. Godfrey leaves the team, his contract was not renewed. |
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