Yankees' Andy Pettitte leaves start with apparent injury

Andy Pettitte left Thursday's start against the Mariners with an apparent injury. (Al Bello/Getty Images)

New York Yankees pitcher Andy Pettitte left his start against the Mariners in the fifth inning on Thursday with what appeared to be an injury.

According to MLB.com's Bryan Hoch, Pettitte exited the game after just 79 pitches after "appear[ing] to stiffen and wince after throwing his final pitch." Yankees manager Joe Girardi came out to talk with Pettitte, who jogged off the mound and was replaced by Shawn Kelley.

Upon leaving his start, Pettitte had surrendered two runs and four hits to the Mariners. He had three walks and five strikeouts. Pettitte entered Thursday's start with a 4-2 record and 3.83 ERA in seven starts this season.