trinidad - vargas is probably the best example of a fighter getting ruined in the first decade of the millenium. corrales and castillo were also pretty much done after their first fight.
Jorge Barrios ruined Mike Anchondo Deigo Corrales ruined Acelino Freitas Vadim Tokarev ruined Felix Cora Jr
I'd disagree with this one - Johnson did himself in. VK was there to sweep the pieces under the rug. I would agree with VK/Peter, though. While Peter seems to have lost his interest, he could've continued to be a force in the division, but I think that dismantling completely killed his desire to compete.
He totally ruined him... Tito also ruined Vargas, Mayorga (after he stopped Mayorga, El Matador suddenly had a suspect chin)
Because of the Malignaggi fight? No, Ricky is mentally ruined. Pacquiao will finsh the job and Hatton will be totally shot.