The Oakland Athletics called up eight players Tuesday, the first day active rosters may be expanded to up to 40 players. They are:
- Catcher: Carson Blair
- Outfielder: Jason Pridie
- Utility: Tyler Ladendorf
- Starter: RHP Cody Martin
- Relievers: RHP R.J. Alvarez, RHP Ryan Dull, RHP Arnold Leon, RHP Dan Otero
The additions of Blair, Pridie, and Dull to the 40-man roster were offset by (1) transferring pitcher Jesse Hahn from the 15-day disabled list to the 60-day disabled list, (2) transferring A.J. Griffin from the minor league disabled list to the major league 60-day disabled list, and (3) outrighting reliever Angel Castro, who cleared waivers.