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UFC 245 results: Kamaru Usman silences Colby Covington with fifth-round TKO to retain title - MMA Fighting
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Kamaru Usman vs Colby Covington title fight official for UFC 245 on Dec. 14 in Las Vegas - MMAmania.com
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UFC 268: Kamaru Usman vs. Colby Covington championship rematch set to headline fight card in November - CBSSports.com
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