Georges St-Pierre
Amanda Nunes
Stat by stat
Bars are scaled to the leader in this list.
The verdict
Georges St-Pierre leads 3 of 4 categories. Our all-time ranking places Georges St-Pierre at #2 and Amanda Nunes at #6.
The case for Georges St-Pierre
The most dominant welterweight in history and a paragon of preparation, GSP retired at 26-2 having avenged both losses. He first won the welterweight title from Matt Hughes at UFC 65 in 2006, suffered a stunning upset knockout by Matt Serra in 2007, then reclaimed the belt and never lost again, defending it nine consecutive times against a murderer's row that included B.J. Penn, Jon Fitch, Thiago Alves, Jake Shields and Nick Diaz. Famous for tailoring a specific game plan to every opponent — wrestling strikers and out-striking wrestlers — he combined an elite jab with suffocating top control. After a four-year hiatus he returned at UFC 217 in 2017 to submit middleweight champion Michael Bisping, becoming a two-division titleholder, then retired on top. His run of 13 title-fight wins stood as a record and his professionalism reshaped the sport.
The case for Amanda Nunes
The greatest female fighter in history, 'The Lioness' is the first woman to hold two UFC titles simultaneously, reigning over both bantamweight and featherweight. She dismantled an entire generation of stars: a 48-second knockout of Ronda Rousey at UFC 207 in 2016, a 51-second knockout of the previously unbeaten Cris Cyborg at UFC 232 in 2018, plus wins over Miesha Tate, Holly Holm, Germaine de Randamie and two victories over Valentina Shevchenko. The only blemish in her prime was a shocking submission loss to Julianna Peña at UFC 269 in 2021, which she emphatically avenged with a one-sided decision at UFC 277 in 2022. She retired as the reigning double champion at 23-5, having beaten more current or former champions than any woman in the sport and settling the female GOAT debate for a generation.