Not only did Dern (16-5 MMA, 11-5 UFC) pull off her first stoppage since April 2021, she avenged a prior loss to Ribas (12-7 MMA, 7-6 UFC) and solidified herself as a potential title challenger. Dern submitted Ribas with an armbar at 4:56 of Round 3 at the UFC Apex in Las Vegas.

Mackenzie Dern is building the momentum that has eluded her. For the first time in four years, Dern has consecutive wins. The decorated Brazilian Jiu-Jitsu star weaponized her grappling to hand Amanda Ribas her first submission loss at UFC Fight Night on Saturday.

The strawweight jiu-jitsu ace submitted Amanda Ribas with a nasty third-round armbar on Saturday night in the main event of UFC Vegas 101, which took place at the UFC APEX in Las Vegas. It was redemption five years in the making for Dern after Ribas toppled her from the ranks of the unbeaten with a one-sided decision loss in 2019.