Finnegan left Monday's game in the sixth inning with a hamstring injury, C. Trent Rosencrans of the Cincinnati Enquirer reports.
Finnegan said he suffered the injury in the third inning and proceeded to pitch through the pain. The lefty went six innings, allowing three runs on six hits and recording four strikeouts. Finnegan noted he should be fine for his next start, but it's certainly something to keep an eye on.