UFC 218: Holloway vs. Aldo 2 was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on December 2, 2017, at Little Caesars Arena in Detroit, Michigan.

[7] Holloway and Aldo met previously at UFC 212, with the former defeating the latter to win the championship.

[8] A UFC Heavyweight title eliminator bout between former K-1 Grand Prix champion Alistair Overeem and up and coming contender Francis Ngannou co-headlined the event.

A flyweight bout between 2008 Olympic gold medalist in freestyle wrestling and former UFC Flyweight Championship challenger Henry Cejudo and Sergio Pettis, initially scheduled for UFC 211 before Cejudo pulled out with a hand injury, was rescheduled for this event.

[9] Subsequently, Cejudo's availability for the event was briefly in doubt as he suffered minor burn injuries to his right foot on the evening of October 9 as he was evacuating his hotel as a result of the Tubbs Fire near Santa Rosa, California.