Bilas

[just another ref]

Originally Posted by Mark T. DeNucci, Sr.

Fiasco:

When I watch this play as an engineer I see an inelastic collision between stationary object of large mass and a small mass moving at a high rate of velocity.

Stationary is the key word. In the still photo the guy is at least 20 degrees away from vertical. He leaned into the contact, then also lifted his forearm at the point of impact. Subtle, perhaps, and size was a big factor in the play, but in my eyes, this guy delivered a blow.