O'Brien was optioned to Triple-A Reno prior to Monday's matchup against the Padres.

EDGE Analysis

O'Brien's brief stint in the majors didn't quite go as expected, as he hit just .123 despite launching four home runs. He had been held out of the starting lineup for four straight contests, so the Diamondbacks are likely just trying to get the young outfielder more consistent at-bats. Look for him to be back up with the club at some point in the second half of the season.