UFC 224: Nunes vs. Pennington was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on May 12, 2018, at the Jeunesse Arena in Rio de Janeiro, Brazil.

[3] However, Cyborg was instead scheduled for a title defense at UFC 222 in March, and the plans were scrapped.

In turn, it was announced on February 23 that Raquel Pennington would instead face Nunes for the bantamweight title.

[4] A light heavyweight bout between former UFC Light Heavyweight Championship title challengers Volkan Oezdemir and Glover Teixeira was briefly linked to take place at the event.

As a result, the bout proceeded at catchweight, and Dern was fined 30% of her purse which went to her opponent Amanda Cooper.