Pena was viewed as little more than a mandatory challenger for Nunes ahead of UFC 269 in December, but she left Las Vegas as a champion and the owner of arguably the greatest upset in the promotion's history, if not the sport's. More than seven months and a season of “The Ultimate Fighter” later, the champion will look to shock her foe as an underdog all over again in UFC 277's headliner in Dallas.
Pena's upset of Nunes marked her second straight win and her third in four fights since ending an 18-month hiatus in 2019, while the once-indomitable Nunes saw a seven-year, 12-fight unbeaten streak come to a grinding halt.
Will Pena thwart Nunes yet again, or will the ex-champ reclaim the bantamweight throne in a vintage, violent showing?