John Riel Casimero

BOXING fighter

John Riel Reponte Casimero is a Filipino professional boxer and YouTuber. He has held world championships in three weight classes including the International Boxing Federation (IBF) junior-flyweight title from 2012 to 2013, the IBF flyweight title in 2016, and the World Boxing Organization (WBO) bantamweight title from 2019 to 2022.