via Sportsnet,

Things looked grim for the Pittsburgh Penguins in the beginning moments of Saturday’s tilt against the Boston Bruins when Evgeni Malkin briefly left the game after a strong shoulder from Chris Kelly. He would later return.

Malkin did not return to the bench at the start of the 2nd period.

Also, Sidney Crosby took the pre-game but was a late scratch by the Penguins.

Only update from the Penguins...

Sidney Crosby took pre-game warmup but determined that he could not play in the Bruins/Penguins game

Watch his pre-game skate below...

added 4:08pm,