Wheres the part where Judah went for the blitz? He stepped in there threw a combo, got countered, chased Cotto a bit and backed off, Judah is just mentally weak. I love Cotto but that lowblow was a momentum killer had that been a finisher in there.
He didn't "throw a combo." Throwing a combination usually means maintaining your feet in it's set position whilst throwing multiple punches. Zab threw the uppercut and then pushed forward while throwing punches. This would be a blitz. Zab usually likes to blitz his opponents. He fired his uppercut, got a flush connect and then proceeded to push forward and follow up. Cotto was composed enough to begin moving backwards and use angles while doing so that Zab's blitz was rendered ineffective.
That was a good shot, got Cotto's attention for sure... Zab has great speed and power but I have seen Cotto recover from punches that have hurt him a lot more than that one did.
Im looking at Cotto's legs after that shot, he does show some off balance somewhat when backing up, but overall I dont think he was really hurt. But he did intentionally low blow Zab though.