Marco Antonio Barrera Tapia is a Mexican former professional boxer who competed from 1989 to 2011. He held multiple world championships in three weight classes between 1995 and 2007, from super bantamweight to super featherweight.

Erik Isaac Morales Elvira is a Mexican former professional boxer who competed from 1993 to 2012. He is the first Mexico-born boxer in history to win world championships in four weight classes, ranging from super bantamweight to light welterweight.