Mosley, Cintron, Maidana, Montiel? A few spring to mind but I can't make a decisive choice! Where is Felix Trinidad when you need him?
I'd say pac at 140 when he is fighting guys his own size. Even fighting much bigger guys he has fight changing power. The cotto fight was changed in the 4th and so was the margarito fight with a viscious bodyshot and a smashed orbital bone. Maidana has some dig but i'd take lemeiux over him for p4p. Abraham maybe limited but he is nasty puncher if he gets you.
Hard to rate Lemiux and Maidana, they havent really stopped anyone with exceptional chin and defense. I remember Valero knocking everyone out within 1 round, suddenly he fights a decent fighter in Mosquera and it takes him 8. I think Abraham when he connects has devastating power. At 140 or some smaller 147's, I think Pac shows very good power too. Lets not forget that Margo has an iron chin and had 20lbs on Pac, Clottey has a very good chin and covered up all night. Cotto still bigger than Pac felt the power and Hatton got ran over. Wlad despite his size advantage has ridiculous power, his opponent nearly always buckles as soon as he lands clean woth a hook or a right hand.
WOW...as soon as I read the title I thought of Lopez, funny that it took 25 posts b4 somebody brought it up, but even funnier some put his nemesis (Gamboa) b4 him. Gambi may be faster but he'll never have as much power as JML, imo! :admin I must be missing something with Andre Berto..
Giovanni Segura Randall Bailey Marcos Maidana Juan M Lopez Arthur Abraham Victor Ortiz Yurokis Gamboa Kelly Pavlik Alfred Angulo Wlad Klitchko David Tua Juan Urango Dimitri Pirog Edison Miranda Fernando Montiel Daniel Ponce Deleon Shane Mosley Tavoris Cloud Luciane Bute Johnny Gonzalez Danny Greene Manny Pacquiao Liberado Andrade David Haye if you consider his weight although he dont hit near as hard as Super heavy Wlad. Probably Lemieux should be up there but let him fight somebody first.
I think Maidana and Gamboa win this hands down. All the other fighters I see listed don't have one punch KO power like those two.