O'Neill exited Saturday's game against the Brewers due to right groin tightness, Derrick Goold of the St. Louis Post-Dispatch reports.

EDGE Analysis

O'Neill started in left field Saturday and grounded into a double play during his lone at-bat. However, he was replaced by Austin Dean to begin the third inning. The severity of O'Neill's injury isn't yet known, and it's unclear whether he'll be forced to miss additional time.