Sonny Gray held the Angels to two runs over six innings Sunday in a no-decision.
Jed Lowrie is not in the Athletics' lineup Sunday.
FOX Sports' Ken Rosenthal reports that the Athletics and Josh Reddick plan to revisit contract extension talks before the trade deadline.
Danny Valencia went 3-for-4 and hit a two-run homer in the first inning to lead the Athletics over the Angels 7-3 on Saturday.
Dillon Overton earned the first win of his career during an Athletics victory over the Angels, yielding three runs on seven hits in 5 2/3 innings.
Coco Crisp finished the day 3-for-4 with a walk, two RBI and four runs scored on Saturday.
Henderson Alvarez received a platelet rich plasma injection in his right shoulder last week.
Sean Manaea (elbow) will be activated from the disabled list Wednesday against the Giants.
Athletics transferred RHP Henderson Alvarez (shoulder) to the 60-day disabled list.
Athletics purchased the contract of LHP Dillon Overton from Triple-A Nashville.
Athletics optioned LHP Eric Surkamp to Triple-A Nashville.
Khris Davis went 2-for-4 and hit a three-run homer as the Athletics topped the Angels 7-4 on Friday.
After setting up for Sean Doolittle on Thursday, Ryan Madson picked up his 14th save with a scoreless ninth against the Angels on Friday.
Stephen Vogt went 3-for-5 and hit his sixth homer Friday against the Angels.
Athletics pitching prospect Dillon Overton will be called up to make his major league debut on Saturday against the Angels.