O'Brien had a rough game on Friday, going 0-for-4 with three strikeouts in a loss to the Marlins.

EDGE Analysis

The 25-year-old slugger was called up earlier in the day and got the start in left, batting fifth. O'Brien probably won't play everyday, as Arizona all of a sudden has a crowded outfield, but he could get occasional starts against lefties, like he did on Friday against Miami's Justin Nicolino.