Ignacio "Nacho" Beristáin is a Mexican trainer in the sport of boxing. Beristain is a member of the Boxing Hall of Fame and is considered one of the greatest trainers in the history of boxing.

Juan Manuel Márquez Méndez is a Mexican former professional boxer who competed from 1993 to 2014. He is the third Mexican boxer to become a world champion in four weight classes, having held five world major titles from featherweight to light welterweight, including the lineal championship at lightweight.