Excellent vid. Looking back you can really see how Sergio knees goes for the KD. In my opinion injuries arent factored in enough in boxing. When Solis lost of Vitali it was because of injury, but people made out as if it was some kind of brutal round 1 KO. Now with JCC Jr v Martinez it is obviously not so prominent, but still a leading factor in the situation that arose.
It looks like it happened twice. Once from the big right hand earlier in the 12th, once with the left hook that led to the KD.
Agreed. Should have gotten the Cintron KO, and his first fight against Williams was a close but clear victory.