Re-watch Jermell Charlo's KO of Jeison Rosario in the 8th round with a power punch to the body to become the unified 154-lb champion.

Jermell Charlo returns to the ring looking to make boxing history when he defends his WBC, WBA and IBF belts against WBO champ Brian Castaño on Saturday, July 17th, LIVE on SHOWTIME.

#CharloDoubleheader #JermellCharlo #CharloCastano

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