When you’re arguably the best female Brazilian jiu-jitsu practitioner in the world, you might as well find news way to challenge yourself. So that was sort of the case for Mackenzie Dern , who displayed 15 minutes of quality striking to notch a unanimous decision win over Katherine Roy , with two judges scoring the 120-pound catchweight fight 30-27 and the other 29-28. LFA 6 took place at the Cowboys Dancehall in San Antonio, Texas, and aired live on AXS TV