Óscar Rafael Valdez Fierro Jr. (born 22 December 1990) is a Mexican professional boxer. He is a world champion in two weight classes, having held the WBC super featherweight title since February 2021, and the WBO featherweight title from 2016 to 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 combination punching. He holds a 77% knockout-to-win percentage. As of October 2021, he is ranked as the world's best active super featherweight by BoxRec. Amateur career At age 17, Valdez came to upset 2007 PanAm champion Carlos Cuadras at the semifinal of the 2007 National Championships and winning the bantamweight championship in his next bout. At the Olympic qualifier he edged out Brazilian James Pereira in the semifinal and got one of two votes even though he lost in the final to Yankiel León, getting a silver...