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Claressa Shields dominates Christina Hammer to become undisputed women's middleweight champion - CBSSports.com
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Claressa Shields defeats Christina Hammer to become undisputed middleweight champion | Boxing News | Sky Sports
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Results: Claressa Shields Wins IBF And WBA World Titles; Christina Hammer Beats Nelson - Boxing News 24/7
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Claressa Shields outpoints Christina Hammer to unify middleweight championship – as it happened | Boxing | The Guardian
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