Athletics Roster & Staff
Transactions
| Date | Transaction |
| 07/27/20 | Oakland Athletics released RHP Daniel Gossett. |
| 07/27/20 | Oakland Athletics invited non-roster RHP Ben Bracewell to spring training. |
| 07/24/20 | Burch Smith changed number to 46. |
| 07/23/20 | Ramon Laureano changed number to 22. |
| 07/23/20 | Franklin Barreto changed number to . |
| 07/22/20 | Oakland Athletics designated RHP Daniel Gossett for assignment. |
| 07/22/20 | Oakland Athletics activated RHP Daniel Mengden from the 60-day injured list. |
| 07/22/20 | Oakland Athletics placed LHP A.J. Puk on the 10-day injured list retroactive to July 20, 2020. |
| 07/22/20 | Oakland Athletics optioned C Jonah Heim to Athletics Alternate Training Site. |
| 07/21/20 | LF Mark Payton returned to Oakland Athletics from Cincinnati Reds. |
| 07/19/20 | Oakland Athletics selected the contract of RHP Jordan Weems from Athletics Alternate Training Site. |
| 07/11/20 | Oakland Athletics invited non-roster C Tyler Soderstrom to spring training. |
| 07/06/20 | Oakland Athletics signed free agent OF Jake Suddleson to a minor league contract. |
| 07/06/20 | Oakland Athletics signed free agent RHP Grant Judkins to a minor league contract. |
| 07/01/20 | Oakland Athletics invited non-roster OF Brayan Buelvas to spring training. |
| 07/01/20 | Oakland Athletics invited non-roster SS Robert Puason to spring training. |