Don Charles, the trainer for heavyweight Dereck Chisora, thinks the three times beaten Amir Khan (28-3, 19 KO’s) would still be an unbeaten fighter if he had stuck it out with his original trainer Oliver Harrison. Khan left Harrison early on with his pro career and was trained by a Cuban trainer Jorge Rubio for his loss to Breidis Prescott in 2008.
Khan then moved on after that to trainer Los Angeles, California based trainer Freddie Roach, and after a run of good luck with him, Khan was then beaten in back to back fights by Lamont Peterson and Danny Garcia. Khan then replaced Roach with the Oakland, California based Virgil Hunter, and Khan has since gone 2-0, albeit against weaker opposition than what he had faced with Roach.