Beast work by Mike Colligan over at the hockey writers.
A lot of people thought the collision with Kunitz is what knocked Crosby out of the lineup, but this video may be the smoking gun:
Colligan's story is a must read
Little tid-bit here:
After a neutral zone faceoff, Crosby slashed Krejci in the leg causing the Bruins center to chop back. The two scuffled and barked at each other after the shift was over before returning to their respective benches to continue the banter.
Based on facial expressions, Krejci didn’t understand why Crosby was so incensed until Crosby pointed to his elbow and then the bruise below his right eye.
Either way, Crosby is off two games. vomit.