After allegedly using plaster wraps (he did) and fought Cotto in 2008 and destroyed Cotto late while causing cuts and swelling to Cotto's face, and next to fight Mosley and had to re-wrap his hands under the request by Mosley's trainer, and then got destroyed suffering his first knockout loss. Besides the plaster wraps as a physical advantage, it's a huge motivation factor when a fighter knows his punches will cause more damage later in the fight without having to exert increased energy. So Mosley (and his team) took the spirit and physical advantage away and it showed.
Getting destroyed by Manny, then Cotto stopped him in the 10th because of swelling but Cotto was ahead 89-82 on all scorecards.
Margarito had a win over Garcia mid 2010 and that was the only spark of positivity from him.
He has nothing to offer the future of boxing and should be considered a criminal and banned for life (had the commissions did a very thorough investigation).
The WBA was on the hook for the serious damage done to Cotto as they also were the governing body when Mosley exposed him in and out of the ring! Had they found plaster and had Margarito admit to it, the WBA would have been facing some serious charges from Cotto and possibly previous fighters who claimed what Cotto said regarding the hard punches causing cuts.
Margarito brings nothing positive to boxing. The mosley fight he was shocked knowing he had no wraps and suffered his first early stop loss by knockout, as the psychology played a role on him that he realized his later round advantage was gone. He did prepare for Manny and took a serious beating, and then the same against Cotto in the rematch.
Margarito's career had he not been involved in any illegal controversy could have been better... why you ask. He would have had to learn to adjust and fight more defensively instead of using the wraps as a short-cut.
Now with a washed up career and a fight headed toward late summer, he should retire and take some responsibility regarding any illegal activities.
BTW- For those that have never boxed, any minor thing done to your wraps, tape or gloves you can tell very easily without throwing a punch. Then when you do punch, you know! For him (and other fighters) to have claimed they couldn't tell is straight out B.S.!!!
Start cleaning up the sport from corrupt governing bodies, judges, refs, promoters, trainers and fighters as well as any other involved individuals.