Charlo vs. Castaño will see unified WBC, WBA and IBF World Champion Jermell Charlo and WBO World Champion Brian Castaño battle for undisputed status at super welterweight as all four 154-pound belts hang in the balance for the first time in history on Saturday, July 17 live on SHOWTIME from AT&T Center in San Antonio in a Premier Boxing Champions event. SHOWTIME CHAMPIONSHIP BOXING begins at 9 p.m. ET/6 p.m. PT. #CharloCastano #JermellCharlo #BrianCastano Visit PremierBoxingChampions.com for more info.

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