Mackenzie Dern enters UFC 321 on October 25, 2025, in Abu Dhabi seeking to become the first woman to capture both an ADCC title and a UFC championship – an achievement matched by only three men, and solely completed across every major discipline by Fabricio Werdum.
Mackenzie Dern At UFC 321
At a pre-fight press conference, Dern noted that Werdum remains the only athlete ever to secure gold in the IBJJF World Championship, Abu Dhabi World Pro, ADCC, and UFC, and she aspires to join him in that rarefied company.
Fabricio Werdum forged his status as a pioneer in elite submission grappling and MMA over two decades.