PITTSBURGH — Tampa Bay Lightning goalie Ben Bishop was stretchered off the ice in Game 1 of the Eastern Conference finals Friday night due to a left leg injury.

Lightning head coach Jon Cooper said after the game X-Rays came back negative, but did give any further update on the starter.

"Nothing structurally wrong, which is a relief," Cooper said per ESPN, adding the team is "hoping for the best."

Bishop was scrambling to get back in the crease when his left leg appeared to get caught. The Vezina Trophy finalist clutched the leg while being tended to by trainers and was taken off the Consol Energy Center ice on a stretcher. He was replaced by backup Andrei Vasilevskiy.

Bishop began the series 8-2 during the post-season with a 1.89 goals-against average.

The Lightning lost centre Tyler Johnson with a lower-body injury late in the first period when Johnson collided with Pittsburgh's Chris Kunitz. Johnson remained in the training room when the Lightning came out for the second period, but eventually returned.

The Penguins had early injury concerns of their own. Pittsburgh defenceman Kris Letang left briefly after getting hit illegally from behind by Tampa Bay's Ryan Callahan. Letang, who has dealt with concussions during his career, laid motionless for several seconds but did skate off under his own power. He missed about 10 minutes of game time before returning.

Callahan earned a 5-minute major penalty but did not receive a game misconduct.