Mackenzie Dern: “I’m training how to escape from the 50/50 guard”
Mackenzie Dern failed to take the gold in the last edition of the IBJJF Pan in late March, in Irvine. In the absolute, the petite…
Ana Carol Lebre
Mackenzie Dern ready to face teammates: “It’s my job”
Jiu-Jitsu world champion from blue to brown belt, Mackenzie Dern, 19, is taming her anxiety for her second IBJJF tournament as a black belt. The star…