Watch: Lightning's Johnson helped off ice after knee-on-knee hit, able to return

No one was safe early in Game 1 of the Eastern Conference finals.

The latest victim was Tyler Johnson of the Tampa Bay Lightning, who had to be helped off the ice following a knee-on-knee bump courtesy of Pittsburgh Penguins forward Chris Kunitz.

The hit came after Kris Letang was boarded but able to return, and Ben Bishop was carted off the ice on a stretcher with an apparent lower-body injury.

Johnson did not return for the beginning of the second period, but emerged from the locker room later in the period.