I might even put Billy Petrolle in the mix for pure power at 135. The Fargo Express might not be a great technician but he could sure hit!
Sweetwater Lew belonged in that poll if it was to be an all time consideration, but I think I'd go with Rosario among the three names offered. Duran was perfectly capable of doing it with a single shot, but attrition was more his thing as I think of his LW reign. But nobody who's viewed it can forget what Chapo did to Ed Viruet, and Ramirez asserted in no uncertain terms after their first match that Rosario was a harder puncher than Arguello. (This actually doesn't surprise me. Alexis was more of a precision placement artist, gifted with an intuitive sense of timing and understanding of the weak spots of the human anatomy in boxing, the definitive sharpshooter. But it did always seem to me that Rosario had more pure force behind his shots.)
ditto this question. read some about him but never seen footage agree with most that rosario is the best of the 3 offered. joe gans for an honourable mention
I've heard that there are newsreels of his fights somewhere out in the ether, definitely not readily available. http://www.eastsideboxing.com/news.php?p=5717&more=1 Very strong puncher, capable of blasting out some of the best with a hit or two. Some good wins like Belloise, Larkin, Montgomery, and Lello. And a single great one destroying Lou Ambers inside 3 rounds... But generally he was an undisciplined, alcoholic street fighting *******. A hard hitting *******. Good call bro, for a boxer type certainly very accurate, explosive, and fast. His snuffing of Kid Herman is one of my favorite turn of the century highlights.
Edwin Rosario, and if he hadn't abandoned his counterpunching skills, more would have been added to the kayoed list.
On this list Rosario for single shots ... Two 135 pound killers were Andy Ganigan and Aaron Pryor who was a lightweight but moved to 140 because no one would give him a title shot at 135 ...