UFC"s Mackenzie Dern: My Hype Train"s Gonna Steamroll Amanda Cooper, "Choo Choo!"

Mackenzie Dern is clappin’ back at her next opponent for saying she’s gonna “derail her hype train” … saying Amanda Cooper doesn’t stand a chance when they scrap at UFC 224. “That’s good, I hope she tries to do that!” Mackenzie told TMZ Sports.…

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