The ten boxers that have disappointed me most in modern times...
... no particular order.
I was a big Chinto fan when he was on the way up, I thought "sky's the limit for this fat ****ing Yank." But he seemed to hit a ceiling surprisingly early, a point where it was "that's it, no more progression". He was a guy who looked slick and then... nothing.
From there it was just a small step to failing drugs tests, getting his eyes made into two arseholes and getting out-gutted by Victor "I'm a boxer, I'm not supposed to be getting hit by punches" Ortiz.