The Padres optioned Wagner to Triple-A El Paso on Monday.
Wagner served as a strong-side platoon player for most of his three-week stay in the big leagues, slashing .257/.422/.286 while scoring five runs in 16 games. Since Wagner was likely to become an odd man out of the lineup with another left-handed hitter in Jake Cronenworth (concussion) returning from the 7-day injured list Moday, the Padres opted to send the 27-year-old to Triple-A so that he can continue to play regularly.