O'Hearn was helped off the field as he was unable to put any weight on his leg. The veteran, who was seen with a crutch in the clubhouse, had already missed 13 games this season with a quad strain.
Pittsburgh could lose not only one of their biggest hitting pieces in their lineup, but one of their team leaders, should O'Hearn miss significant time.
He's slashing a solid .270/.334/.454 this season, while his 17 home runs are tied for a single-season career high. O'Hearn already set a personal best with 69 RBI through 96 games.
The 33-year-old Florida native signed a two-year, $29 million deal with the Pirates during the offseason and recently made history after becoming the first player in franchise history to ever record 10 RBI in a single game thanks to a trio of home runs.
Pittsburgh currently boasts a 55-56 record, sitting third in the National League Central division, as they sit 2.5 games out of a Wild Card spot.
MAJOR LEAGUE BASEBALL
The MLB regular season is now in its final two months as the countdown to the Postseason begins!