Just watched this fight. Nice one, short, all-out war, good stuff. I did NOT like the ending, I feel the ref let it go on for too long. About 2-3-4 punches too long, the guy was facing the corner and Ramirez got in a couple punches before the ref stepped in.
Rosario really blew his load trying to crack Ramirez's cast iron chin. Never particularly smart to give absolutely everything you have within a few rounds against a guy who's more than likely capable of absorbing it.
...............I've mentioned this here before, but the thing that sticks out for me concerning Rosario (besides the power, of course) is his total inability to either clinch or recover once hurt. If you hurt him, you won. Period. He just completely unravelled and stood there like a statue.
Rosario was a beautiful, just beautiful boxer/puncher on the way up before he discovered his enormous power to it's full extent and stopped developing at the expense of it.
Rosario also boxed with his elbows out (not tucked to his sides). Chavez brutalized him to the body because of this technique (or lack thereof). The deficiencies mentioned in this thread kept him from being an ATG. He really should have been. So much potential.