PITTSBURGH -- Pirates rookie right-hander Mitch Keller was pulled from Tuesday night's game with a bruised right wrist after being struck by a line drive.

Keller was injured in the second inning on a comebacker hit by Miami's Garrett Cooper. Considered the Pirates' top prospect going into the season, Keller was making his eighth major league start Tuesday night. He is 1-3 with an 8.18 ERA.

Keller was struck flush on the outer part of the wrist. The Pirates said initial imaging revealed only a bruise.

Clay Holmes relieved Keller with the game scoreless.