| | | Monday, March 1st, 2021 | | Drafted SP Jerome Keller in the 2021 first-year player draft (Round 1, Pick 1, 1st overall pick). | | Drafted RF Ken Cass in the 2021 first-year player draft (Round 1, Pick 8, 8th overall pick). | | Drafted 3B Hector Galante in the 2021 first-year player draft (Round 1, Pick 20, 20th overall pick). | | Drafted MR George Clarke in the 2021 first-year player draft (Round 1, Pick 23, 23rd overall pick). | | Drafted C José Silva in the 2021 first-year player draft (Round 2, Pick 24, 56th overall pick). | | Drafted 1B Aurelio Chávez in the 2021 first-year player draft (Round 4, Pick 1, 98th overall pick). | | Drafted MR Brandon Thomas in the 2021 first-year player draft (Round 5, Pick 1, 132nd overall pick). | | Drafted CF Ernesto Rúbio in the 2021 first-year player draft (Round 6, Pick 1, 173rd overall pick). | | Drafted MR Alonso Avilés in the 2021 first-year player draft (Round 7, Pick 1, 208th overall pick). | | Drafted 2B José Viera in the 2021 first-year player draft (Round 8, Pick 1, 232nd overall pick). | | Drafted SP Tony Alexander in the 2021 first-year player draft (Round 9, Pick 1, 256th overall pick). | | Drafted 1B Brian Robinson in the 2021 first-year player draft (Round 10, Pick 1, 280th overall pick). |
| Saturday, January 30th, 2021 | | Signed free agent C Ralph Patterson to a 1-year contract worth a total of $800,000. |
| Sunday, January 17th, 2021 | | Signed free agent CF Brian Jordan to a 3-year contract worth a total of $18,450,000. |
| Thursday, January 7th, 2021 | | Signed free agent SP Kevin Jones to a 1-year contract worth a total of $5,230,000. | | Signed free agent SP Denny Taylor to a 1-year contract worth a total of $3,250,000. |
| Saturday, January 2nd, 2021 | | Signed free agent MR Raúl Domingo to a 1-year contract worth a total of $820,000. |
| Saturday, December 26th, 2020 | | Signed free agent CL Joseph Page to a 2-year contract worth a total of $22,000,000. |
| Sunday, December 20th, 2020 | | Signed free agent SP Daniel Sherman to a 1-year contract worth a total of $1,500,000. |
| Friday, December 18th, 2020 | | Signed free agent MR David Elliott to a 3-year contract worth a total of $21,000,000. |
| Thursday, December 17th, 2020 | | Signed free agent SP Larry Burke to a 2-year contract worth a total of $25,000,000. |
| Wednesday, November 25th, 2020 | | 1B Kyle Ryan received a 1-year contract through automatic renewal worth a total of $400,000. | | 1B Robert Hobbs received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Sumio Kokawa received a 1-year contract through automatic renewal worth a total of $400,000. | | C Chris Trent received a 1-year contract through automatic renewal worth a total of $400,000. | | RF Mike Setser becomes a free-agent. | | 2B Ray Moore received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Quinton Beard received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Luis Mateo received a 1-year contract through automatic renewal worth a total of $400,000. | | CF Eric Duthie received a 1-year contract through automatic renewal worth a total of $400,000. | | LF Manolo Peña received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Marty Smith received a 1-year contract through automatic renewal worth a total of $400,000. | | CL Werner Sims received a 1-year contract through automatic renewal worth a total of $400,000. | | 3B Eric Conrad becomes a free-agent. | | 2B Alex Holland received a 1-year contract through automatic renewal worth a total of $400,000. | | SS Bob Wilson received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Ernie Martin received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Josh Taylor received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Weston Merritt received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Fernando García received a 1-year contract through automatic renewal worth a total of $400,000. | | C Eduardo Árias becomes a free-agent. | | SP Lúcio Flores becomes a free-agent. | | C Jorge Quiñones becomes a free-agent. | | SS Cameron Anderson becomes a free-agent. | | SP Damon Tipping becomes a free-agent. | | SP Alfredo Pérez becomes a free-agent. | | 3B George McDaniel becomes a free-agent. | | 3B Adrian Middleton becomes a free-agent. | | SP Santiago Rodríguez becomes a free-agent. | | MR Alberto Medina becomes a free-agent. | | MR Lulaklenzi Lahsini becomes a free-agent. |
| Sunday, November 22nd, 2020 | | MR John Farris becomes a free-agent. | | C Hitomaro Sato becomes a free-agent. | | 2B Phil Murray received a 1-year contract through arbitration worth a total of $800,000. |
|
|
