| Sunday, March 1st, 2020 |
| Drafted 2B Roberto Cisneros in the 2020 first-year player draft (Round 4, Pick 6, 87th overall pick). |
| Drafted RF Albert Vaughan in the 2020 first-year player draft (Round 4, Pick 7, 88th overall pick). |
| Drafted C Luis Rosado in the 2020 first-year player draft (Round 6, Pick 21, 161st overall pick). |
| Drafted C Carlos Sánchez in the 2020 first-year player draft (Round 7, Pick 21, 188th overall pick). |
| Drafted C Justin Hankins in the 2020 first-year player draft (Round 8, Pick 21, 212nd overall pick). |
| Drafted SP John Tate in the 2020 first-year player draft (Round 9, Pick 21, 236th overall pick). |
| Drafted C Del Kelly in the 2020 first-year player draft (Round 10, Pick 21, 260th overall pick). |
| Tuesday, November 19th, 2019 |
| 1B Arnold Thomason becomes a free-agent. |
| MR Luther Crean becomes a free-agent. |
| RF Harry Winters received a 1-year contract through automatic renewal worth a total of $400,000. |
| CF Bruce McLean received a 1-year contract through automatic renewal worth a total of $400,000. |
| SS Vicente Durán received a 1-year contract through automatic renewal worth a total of $400,000. |
| MR Rob Tinker received a 1-year contract through automatic renewal worth a total of $400,000. |
| LF Wyatt Porter received a 1-year contract through automatic renewal worth a total of $400,000. |
| MR Henry Poole becomes a free-agent. |
| RF Gabriel Rodríguez received a 1-year contract through automatic renewal worth a total of $400,000. |
| 2B Mitch Potts received a 1-year contract through automatic renewal worth a total of $400,000. |
| SS Brian Foreman received a 1-year contract through automatic renewal worth a total of $400,000. |
| 3B Eric Conrad becomes a free-agent. |
| SS Bob Palmer received a 1-year contract through automatic renewal worth a total of $400,000. |
| 1B José Flores received a 1-year contract through automatic renewal worth a total of $400,000. |
| C Phil McCoubrey received a 1-year contract through automatic renewal worth a total of $400,000. |
| SP Moromao Kobayashi becomes a free-agent. |
| SP Danny Whaley becomes a free-agent. |
| MR Joe Miller becomes a free-agent. |
| LF Joey Franklin becomes a free-agent. |
| 3B Jorge Morales becomes a free-agent. |
| SP Santiago Perucho becomes a free-agent. |
| SP Luis Carranza becomes a free-agent. |
| MR Nathan Gwyn becomes a free-agent. |
| SS Roy Miller becomes a free-agent. |
| C Jesús Fajardo becomes a free-agent. |
| 1B Pedro Gómez becomes a free-agent. |
| Saturday, November 16th, 2019 |
| CL Sandro López received a 1-year contract through arbitration worth a total of $2,021,500. |
| SP Oliver Allison received a 1-year contract through arbitration worth a total of $2,160,000. |
| MR Chris Rogers received a 1-year contract through arbitration worth a total of $600,000. |
| SS Chris Boyd received a 1-year contract through arbitration worth a total of $2,554,500. |
| SP Tim Douglas received a 1-year contract through arbitration worth a total of $3,525,000. |