It’s unclear who UFC women’s bantamweight champion Ronda Rousey ’s next challenger will be upon her return from a broken thumb and knee surgery, but there will be one more fighter vying for the option. UFC president Dana White on Thursday tweeted that the promotion had just signed world-champion-boxer-turned-mixed-martial-artist Holly Holm . The signing is the culmination of months of negotiations that intermittently ran hot and cold.
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