In a history-making performance, Jermell Charlo again showed he’s the master of the rematch. Unified WBC, WBA and IBF World Champion Jermell Charlo picked up the WBO title with a dramatic 10th-round KO of Brian Castaño in a rematch of their 2021 masterpiece to become the first ever undisputed male 154-pound champion in the four-belt era.