Mario Barrios (26-0-0 with 17 KOs) remained undefeated on Halloween night with a knockout of Ryan Karl (18-3-0 with 12 KOs) in front of a Showtime pay-per-view audience. The WBA 140-pound champ stopped Karl in the sixth round on what may have been the card of the year. The night delivered big-time with all four … Continued

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