| | | Sunday, April 4th, 2021 | | Activated CF Hank Contos from the disabled list. |
| Thursday, February 25th, 2021 | | MR Ken Barrett was designated for assignment, placed on waivers and taken off the 40-man roster. | | MR Jeff Clark was claimed off waivers by New York. |
| Saturday, February 13th, 2021 | | Signed free agent 3B Aurelio Vázquez to a 1-year contract worth a total of $2,340,000. | | MR Jeff Clark was designated for assignment, placed on waivers and taken off the 40-man roster. |
| Tuesday, February 9th, 2021 | | Signed free agent SS Luis Miguel Galindo to a 1-year contract worth a total of $950,000. | | C Willie Stevens was designated for assignment, placed on waivers and taken off the 40-man roster. |
| Wednesday, November 25th, 2020 | | SS Richard Hansen received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Willie Collier becomes a free-agent. | | RF Rusty McBride received a 1-year contract through automatic renewal worth a total of $400,000. | | RF George Ross received a 1-year contract through automatic renewal worth a total of $400,000. | | C Ken Lee received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Jeff Clark received a 1-year contract through automatic renewal worth a total of $400,000. | | CL Cisco Calderón received a 1-year contract through automatic renewal worth a total of $400,000. | | 3B Leland Parker received a 1-year contract through automatic renewal worth a total of $400,000. | | 2B Dennis Young received a 1-year contract through automatic renewal worth a total of $400,000. | | LF Nathan Bailey received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Matt Hayes received a 1-year contract through automatic renewal worth a total of $400,000. | | LF Howard Mossop received a 1-year contract through automatic renewal worth a total of $3,000,000. | | RF Ben Lee received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Paul Thomas received a 1-year contract through automatic renewal worth a total of $400,000. | | 1B Ken Hayes received a 1-year contract through automatic renewal worth a total of $400,000. | | SS Cal Anderson received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Ollie Murray received a 1-year contract through automatic renewal worth a total of $400,000. | | 1B Nolan Norris received a 1-year contract through automatic renewal worth a total of $400,000. | | 3B Jim Morgan received a 1-year contract through automatic renewal worth a total of $400,000. | | RF Víctor Castellanos received a 1-year contract through automatic renewal worth a total of $400,000. | | 2B José Ocampo received a 1-year contract through automatic renewal worth a total of $400,000. | | SS Gerald Farrell received a 1-year contract through automatic renewal worth a total of $400,000. | | 3B Doug McFadden received a 1-year contract through automatic renewal worth a total of $400,000. |
| Sunday, November 22nd, 2020 | | MR Charles Featherstone received a 1-year contract through arbitration worth a total of $1,715,000. | | SP Paul Mann received a 1-year contract through arbitration worth a total of $600,000. | | SP Juan Carlos López received a 1-year contract through arbitration worth a total of $1,455,000. | | MR Chun-mei Hou received a 1-year contract through arbitration worth a total of $1,687,000. | | RF Roberto Gibbons received a 1-year contract through arbitration worth a total of $800,000. | | SP José Gil received a 1-year contract through arbitration worth a total of $3,366,510. | | MR Harrison Elder received a 1-year contract through arbitration worth a total of $600,000. | | SP Shoji Furukawa received a 1-year contract through arbitration worth a total of $2,600,000. | | SP Lee Henry received a 1-year contract through arbitration worth a total of $600,000. |
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