haye vs ruiz - on a second watch

in the first round when ruiz goes down if you watch the replays its actually from a shot to the shoulder and yet ruiz crashes to the floor and appears almost out on his feet, at the very least stunned!

Has something like that even happened before? quite a remarkable shot by haye in hindsight i think (providing my eyes arnt playing tricks but iv confirmed with others who agree!)

If you look at the replay at 3:33 it hits his chin but the angle at which Haye is throwing the punch he follows through like you should and goes into the shoulder after the chin.

http://www.youtube.com/watch?v=fbFB7...feature=relmfu