Óscar Rafael Valdez Fierro (born 22 December 1990) is a Mexican professional boxer who held the WBO featherweight title from 2016 to August 2019.
Valdez qualified for the 2008 Olympics at the age of 17 and became the first Mexican Youth World Champion.
Four years later he qualified for the 2012 Summer Olympics.
Valdez is known for his aggressive fighting style, punching power and terrific combination punching.
He currently boasts a 79% knockout ratio.As of March 2018, he is ranked the fourth best active featherweight in the world by The Ring and fifth by the Transnational Boxing Rankings Board.