Juan Manuel Márquez Méndez (born August 23, 1973) is a Mexican former professional boxer who competed from 1993 to 2014. He is known for defeating Manny Pacquiao. He is the third Mexican boxer (after Érik Morales and Jorge Arce) to become a world champion in four weight classes, having held nine world championships including the WBA (Super), IBF and WBO featherweight titles between 2003 and 2007; the WBC super featherweight title from 2007 to 2008; the WBA (Super), WBO, Ring magazine and lineal lightweight titles between 2008 and 2012; and the WBO junior welterweight title from 2012 to 2013. Márquez was inducted into the International Boxing Hall of Fame in the class of 2020.