3. UFC 269: Julianna Pena vs. Amanda Nunes
No, it’s not taking the top spot. But it’s awfully close.
Amanda Nunes had defeated some of the biggest names in Ultimate Fighting Championship history, such as Ronda Rousey, Cris Cyborg, Holly Holm and Miesha Tate, beating all of them in the first round. Including fights as a title challenger, Nunes had won nine title matches as part of her 12-fight win streak and has been the UFC’s most successful double champion. But Julianna Pena overcame the odds as she was aggressive against Nunes and came away with a submission win in the second round, just as she predicted.
The UFC 269 broadcast immediately called it the biggest upset in the promotion’s history. They forgot about a couple.