Crosby was a late scratch against the Boston Bruins at Consol Energy Center for unspecified reasons after participating in warm-ups. Malkin seemed to sustain a lower-body injury after colliding with Bruins forward Chris Kelly during his first shift.
Penguins coach Mike Johnston said he was notified Crosby was not feeling well and was seeing doctors minutes before the game.
"It's just he wasn't feeling well. That's the best way to describe it," Johnston said afterward. "So, it's not an injury. He didn't get himself injured in warm-up. He just wasn't feeling well and he went to see the doctors. I thought he was great at our meeting. He seemed to be fine, but somewhere between then and the end of warm-up when he came into the dressing room, he went to see the trainers and they said to see the doctors, and from there the decision was made that we were just going to keep him out."