Flaherty was removed from Friday's game against the Guardians due to left leg discomfort, Cody Stavenhagen of The Athletic reports.
Flaherty gave up two earned runs on three hits and a walk while striking out one batter before his leg forced him out of the game after the third inning. More will be known regarding the severity of his injury once the Tigers' medical staff takes a closer look at him, and an update on his status could come after the game.