Christina Hammer, Claressa Shields -  Claressa Shields is the undisputed middleweight champion of the world. The 24-year-old Flint native delivered the best performance of her career and cruised to a unanimous decision over Germany's Christina Hammer Saturday on SHOWTIME in arguably the most significant women's boxing match in history. The judges scored the fight from Boardwalk Hall in Atlantic City 98-92 and 98-91 twice.
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