Amanda Nunes
Conor McGregor
Stat by stat
Bars are scaled to the leader in this list.
The verdict
Amanda Nunes leads 3 of 4 categories. Our all-time ranking places Amanda Nunes at #6 and Conor McGregor at #11.
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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.
The case for Conor McGregor
The biggest star the sport has ever produced, McGregor changed MMA's economics and reach while backing it up in the cage during his prime. He became the first fighter to hold two UFC titles simultaneously, knocking out featherweight king José Aldo in a record 13 seconds at UFC 194 in 2015 and stopping Eddie Alvarez for the lightweight belt at UFC 205 in 2016. His left hand was one of the most feared weapons in the sport, and his self-promotion filled arenas and drove the two biggest pay-per-views in company history. He also crossed into boxing for a blockbuster loss to Floyd Mayweather in 2017. Injuries, inactivity and losses to Nate Diaz and Khabib Nurmagomedov, plus a leg break against Dustin Poirier in 2021, clouded his later years. He sits around 22-6, but his peak dominance and cultural impact are undeniable.