Brebbia was optioned to Triple-A Sacramento on Sunday.
Brebbia covered 2.1 innings across three appearances during his most recent major-league stint. He allowed two runs (one earned) on four hits and two walks with four strikeouts in that span. Brebbia and Caleb Baragar move to the minors to make room for Wilmer Flores (hamstring) and Austin Slater (concussion) returning from the injured list.