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Claressa Shields dominates Christina Hammer to become undisputed women's middleweight champion - CBSSports.com
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Boxer Christina Hammer is seen during the official Weight-In in Brno Modrice, Czech Republic on April 4, 2012. (CTK Photo/Igor Sefr Stock Photo - Alamy
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CHRISTINA HAMMER SIGNS WITH WASSERMAN BOXING – Boxing News – Boxing, UFC and MMA News, Fight Results, Schedule, Rankings, Videos and More
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