When the calendar turns to October, Mackenzie Dern and Yan Xiaonan will set off an important trio of upcoming fights in the UFC strawweight division. Dern (12-2 MMA, 7-2 UFC), who is No. 5 in the latest USA TODAY Sports/MMA Junkie rankings at 115 pounds , and No. 9 Xiaonan (15-3 MMA, 6-2 UFC) will headline UFC Fight Night 211 on Oct
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