- McGregor, also known as "The Notorious," predicted a quick win over Jose Aldo in their 2015 featherweight title fight. He laid out a scene where he catches Aldo with a left hand to counter a right punch. It was exactly what happened, as the Irishman ended with a 13-second knockout win to become the second 145-pound titleholder in UFC history.
- McGregor also predicted a first-round knockout finish over Poirier before their first fight in 2014. He did exactly as he said, winning via TKO in less than two minutes.
- UFC 257 will be McGregor's first fight in a year. He last saw action at UFC 246 against Donald Cerrone in January 2020 and won via TKO inside 46 seconds.
- Poirier last fought in June against Dan Hooker. He won via unanimous decision in what many saw as a strong candidate for 2020 Fight of the Year.