Athletics Roster & Staff
Transactions
| Date | Transaction |
| 02/28/19 | RHP Trey McNutt assigned to Oakland Athletics. |
| 02/28/19 | LF Mark Payton assigned to Oakland Athletics. |
| 02/26/19 | RHP Sam Bragg assigned to Oakland Athletics. |
| 02/25/19 | SS Kevin Merrell assigned to Oakland Athletics. |
| 02/25/19 | RHP Wyatt Marks assigned to Oakland Athletics. |
| 02/25/19 | SS Edwin Diaz assigned to Oakland Athletics. |
| 02/25/19 | RHP James Naile assigned to Oakland Athletics. |
| 02/25/19 | LHP Pat Krall assigned to Oakland Athletics. |
| 02/25/19 | RHP John Gorman assigned to Oakland Athletics. |
| 02/25/19 | RHP Brian Howard assigned to Oakland Athletics. |
| 02/24/19 | RHP Chase Cohen assigned to Oakland Athletics. |
| 02/24/19 | RHP Joe DeMers assigned to Oakland Athletics. |
| 02/24/19 | OF Tyler Ramirez assigned to Oakland Athletics. |
| 02/24/19 | OF Jameson Hannah assigned to Oakland Athletics. |
| 02/24/19 | RHP Gus Varland assigned to Oakland Athletics. |
| 02/23/19 | RHP Daulton Jefferies assigned to Oakland Athletics. |
| 02/23/19 | LHP Zack Erwin assigned to Oakland Athletics. |
| 02/23/19 | RHP Corey Walter assigned to Oakland Athletics. |
| 02/23/19 | RHP Joel Seddon assigned to Oakland Athletics. |
| 02/23/19 | SS Jeremy Eierman assigned to Oakland Athletics. |
| 02/23/19 | CF Austin Beck assigned to Oakland Athletics. |
| 02/22/19 | OF Greg Deichmann assigned to Oakland Athletics. |
| 02/15/19 | Oakland Athletics signed free agent RF Robbie Grossman. |
| 02/15/19 | Oakland Athletics placed RHP Daniel Gossett on the 60-day injured list. Recovery from Tommy John surgery. |
| 02/15/19 | Oakland Athletics signed free agent SS Cliff Pennington to a minor league contract and invited him to spring training. |
| 02/14/19 | Oakland Athletics signed free agent LHP Tyler Alexander to a minor league contract and invited him to spring training. |
| 02/13/19 | Oakland Athletics signed free agent LHP Brett Anderson. |
| 02/13/19 | Oakland Athletics placed LHP Sean Manaea on the 60-day injured list. Recovering from left shoulder surgery. |
| 02/11/19 | Oakland Athletics signed free agent C Nick Hundley to a minor league contract and invited him to spring training. |
| 02/08/19 | Oakland Athletics signed free agent RHP Logan Verrett to a minor league contract. |
| 02/05/19 | Oakland Athletics signed free agent LHP Jerry Blevins to a minor league contract and invited him to spring training. |