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.

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.

UFC strawweight Mackenzie Dern defeated Amanda Ribas via armbar with just four seconds remaining in the third round in the headliner of UFC's first event of 2025 on Saturday in Las Vegas.