Mackenzie Dern, a jiu-jitsu champion stayed unbeaten at LFA 24. She competed against Mandy Polk on Friday, October 13. Dern was destroying flyweight veteran Mandy Polk with punches and after that she choked her with Rear Naked Choke. It was a very successful performance of Mackenzie Dern’s debut in flyweight division as she was having a … Continue reading Mackenzie Dern Chokes Mandy Polk for 4-0 in MMA