Mackenzie Dern wants to tap out submission queen at UFC 330

Women’s strawweight champion Mackenzie Dern puts her title on the line for the first time in the UFC 330 co-main event on Aug. 15 against No. 4 ranked Gillian Robertson. Stylistically, it’s a matchup between two submissions specialists. Dern is a former jiu-jitsu world champion with half of her …
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