The Athletics demoted right-hander Mitch Spence to Triple-A Las Vegas on Thursday, one day after he served up five homers in a 9-2 loss to the Atlanta Braves.
The Athletics recalled right-hander Osvaldo Bido from the same affiliate in a corresponding move.
American League All-Star starting shortstop Jacob Wilson (left hand contusion) wasn't in the starting lineup against Atlanta on Thursday for the second straight night. Wilson was plunked by a pitch from rookie right-hander Didier Fuentes in the first inning of Tuesday's victory over the Braves.