Now the American will look to prove that her stunning victory was no fluke, while featherweight champion Nunes seeks to put things right and regain her status as a dual-weight title holder.
The pair’s rematch follows another title fight, with former flyweight champion Brandon Moreno taking on Kai Kara-France to crown an interim title holder at 125lbs. Moreno dethroned Deiveson Figueiredo last year after drawing with the Brazilian in 2020, but the Mexican lost the pair’s trilogy bout this January to drop the gold.
Here’s all you need to know about UFC 277.
When is it?
UFC 277 takes place at the American Airlines Arena in Dallas, Texas on Saturday 30 July.
The early prelims will start at 11pm BST (3pm PT, 5pm CT, 6pm ET), with the prelims following at 1am BST on Sunday 31 July (5pm PT, 7pm CT, 8pm ET on Saturday).
The main card then begins at 3am BST on Sunday (7pm PT, 9pm CT, 10pm ET on Saturday).
How can I watch it?
The card will air live on BT Sport in the UK, with the broadcaster’s app and website also streaming the fights.
In the US, ESPN+ will stream the action live, as will the UFC’s Fight Pass.
Nunes – 4/11; Pena – 21/10
Moreno – 1/2; Kara-France – 13/8
Julianna Pena (C) vs Amanda Nunes 2 (women’s bantamweight title)
Brandon Moreno vs Kai Kara-France (interim flyweight title)
Derrick Lewis vs Sergei Pavlovich (heavyweight)
Alexandre Pantoja vs Alex Perez (flyweight)
Magomed Ankalaev vs Anthony Smith (light heavyweight)
Alex Morono vs Matthew Semelsberger (welterweight)
Drew Dober vs Rafael Alves (lightweight)
Justin Tafa vs Don’Tale Mayes (heavyweight)
Diego Ferreira vs Drakkar Klose (lightweight)
Ramiz Brahimaj vs Michael Morales (welterweight)
Ji Yeon Kim vs Mariya Agapova (women’s flyweight)
Igancio Bahamondes vs Ludovit Klein (lightweight)
Nicolae Negumereanu vs Ihor Potieria (light heavyweight)
Orion Cosce vs Blood Diamond (welterweight)