Brubaker left Saturday's game against the Cubs in the fourth inning with an apparent injury, Mike Persak of the Pittsburgh Post-Gazette reports.
This is a tough break for Brubaker, who was just making his return from a stint on the IL with a thumb issue. It's not clear whether this is related to the thumb or a new injury entirely. Brubaker cruised through his first three innings Saturday before allowing the first two batters to reach in the fourth and also uncorking a wild pitch.