Mackenzie Dern
Mackenzie Lynne Dern Santos is a Brazilian-American professional mixed martial artist and Brazilian Jiu-Jitsu practitioner. She is a former world No. 1 ranked IBJJF competitor, currently ranked 6th among the female divisions. Dern made her promotional debut against Ashley Yoder on March 3, 2018, at UFC 222. She faced Amanda Cooper on May 12, 2018 at UFC 224.