Sean Manaea (shoulder) said it's possible he could make his next scheduled start.
Yonder Alonso went 2-for-4 with a homer Wednesday against the Angels.
Sean Manaea left Wednesday's start against the Angels with left shoulder tightness.
Athletics manager Bob Melvin said Kendall Graveman will be on a "slightly" reduced pitch count when he returns from the disabled list Thursday against the Angels.
Daniel Mengden (foot) threw two sets of 20 pitches during Wednesday's bullpen session.
Chris Bassitt (elbow) will begin a minor league rehab assignment with High-A Stockton on Saturday.
Ryon Healy was hitless in five at-bats with four strikeouts in Tuesday's loss against the Angels.
Matt Joyce was hitless in four at-bats with a strikeout in Tuesday's road loss against the Angels.
Jesse Hahn allowed just one single and two walks with six strikeouts over eight scoreless innings in a no-decision Tuesday at L.A. Angels.
John Axford (shoulder) has resumed throwing.
Kendall Graveman (shoulder) will return to the A's rotation Thursday in Anaheim.
Kendall Graveman (shoulder) threw a successful 42-pitch bullpen session on Monday.
Athletics recalled OF Ryan LaMarre from Triple-A Nashville.
Athletics recalled RHP Cesar Valdez from Triple-A Nashville.
Athletics designated RHP Raul Alcantara for assignment.