Roberts was removed from an appearance versus the Pirates on Wednesday in the fourth inning with an apparent injury, Meghan Montemurro of the Chicago Tribune reports.
Roberts retired the final batter in the bottom of the second inning and got through a scoreless third inning. However, he gave up a home run, hit a batter with a pitch and surrendered a single in the fourth before being visited by the trainer and exiting the field. It's unclear what injury he's dealing with, but the Cubs should provide an update soon. Roberts was charged with two runs over 1.1 frames before being lifted.