Juan Manuel Márquez
Mexican boxer Juan Manuel Márquez competed in the ring from 1993 to 2014. After Érik Morales and Jorge Arce, Márquez is actually the third Mexican boxer to become a world champion in four weight classes. In his 20 year career, he was known as a fast and highly technical boxer.
Amir Khan
British boxer Amir Khan is a former unified light-welterweight world champion, who held the WBA (later Super) title from 2009 to 2012. Khan also held the IBF title in 2011. In April 2016, BoxRec ranked him as the 13th best, pound for pound. In 2017, he announced his return to the welterweight.