Peralta is out of the lineup for Sunday's game against the Giants.
Peralta has largely served as a strong-side platoon player at designated hitter or in the corner outfield since he was promoted from Triple-A El Paso in late May, but his opportunities will likely be more scarce for the rest of the season with Fernando Tatis having taken back an everyday role since being activated from the 60-day injured list Monday. Since Tatis' activation, Peralta has now started just twice in the Padres' ensuing six games, sitting against right-handed pitchers on four occasions.