Olson hit an RBI single in the first and the A’s lost a replay review to end the second when Grossman was called out at home and the call upheld.

The Padres (25-17) have scored 46 runs over their last seven games.

Oakland’s Matt Chapman struck out two more times before Chad Pinder replaced him. Manager Bob Melvin said Chapman has a right hip strain and will get an MRI.

The star third baseman struck out 10 times in the three-game series. He was fanned five times Saturday and three Friday following Oakland’s extended time off.

The A’s are 6-6 against the National League and 17-8 facing AL opponents.

Padres: Rookie Luis Campusano went on the injured list with a sprained left wrist. He had been set to start at catcher Saturday but felt something during batting practice swings in his left hand. “His pain level is down a little bit but I don’t think we would expect him to be able to play today,” manager Jayce Tingler said before the move was official. Campusano was undergoing treatment on the wrist. … New right-hander Taylor Williams, acquired last week in a trade with the Mariners, was added from the club’s alternate training site to fill the roster spot.