Arman Tsarukyan has been forced out of the main event at UFC 311, with Brazil's Renato Moicano stepping in to challenge Islam Makhachev on one day's notice.

UFC star Renato Moicano knew that him getting a shot at the title at UFC 311 was a possibility before it even happened.

Renato Moicano exudes confidence as he aims to capitalize on his unexpected title shot against Islam Makhachev at UFC 311.

The first big Ultimate Fighting Championship show of the year has just taken a monumental hit. During the UFC 311 early weigh-ins on Friday, Sherdog learned from sources close to the situation that headlining lightweight title challenger Arman Tsarukyan suffered a back injury.

The 35-year-old Brazilian will look to take yet another step forward at 155 pounds when he confronts Beneil Dariush in a three-round UFC 311 showcase on Saturday in Los Angeles.

Renato Moicano is ready for the opportunity of a lifetime — and Islam Makhachev is more than willing to give it to him.

UFC President Dana White announced Friday that Islam Makhachev will defend the UFC lightweight title against Renato Moicano at UFC 311 on Saturday