who gave mayorga the best ass kicking

[Bookkeeper]

I guess Oscar.

That being said I think Tito ruined Mayorga at least a little bit. Mayorga ruined himself to some extent but Tito helped.

But if you're just looking at the fights with no other context then it would be the Oscar one.

Yes I agree. You have to compare the condition of the fighter, and Tito fought a much more game, fierce, headstrong fighter than either De La Hoya or Mosley. It's actually the same situation on who gave Vargas the worst ass whoppin