The Padres optioned Brito to Triple-A El Paso on Sunday.
Brito made just one appearance with the big-league club after being called up on Wednesday. The 28-year-old delivered a scoreless inning out of the bullpen in Saturday's 6-1 loss to the Royals, allowing one hit while striking out a batter. In a corresponding move, San Diego reinstated Wandy Peralta (personal) from the bereavement list.