Makhachev was set to defend his title in a rematch against Arman Tsarukyan, while Moicano was to face Beneil Dariush. However, everything changed at the official morning weigh-ins when Tsarukyan withdrew from his title opportunity due to a back injury.

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.

Everything you need to know about the UFC 311 pay-per-view fight card lightweight bout: Beneil Dariush Vs. Renato Moicano - Preview, odds, picks, predictions and more.

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

UFC 311 takes place tonight and will see Islam Makhachev try and set a new lightweight record for the most number of title defences when he takes on 35-year-old Brazilian, Renato Moicano.

Renato Moicano urges UFC to increase $50K performance bonuses, citing inflation and fighters’ needs for fair compensation in MMA.

Islam Makhachev will now defend his title against Renato Moicano, following the withdrawal of original challenger Arman Tsarukyan due to a back injury.

Islam Makhachev is looking to make history at UFC 311. He is looking to become the first lightweight champion with four successful title defenses. He was coming off his submission win over Dustin Poirier last June and tomorrow night, he’ll look to run through Moicano.

Arman Tsarukyan's nearly six-year journey to the UFC lightweight title will take a little longer. Tsarukyan suffered an injury two nights before challenging lightweight champion Islam Makhachev at UFC 311.

The UFC 311 main event is now Islam Makhachev vs Renato Moicano for the undisputed UFC lightweight championship. This shocking matchup has been made following a back injury sustai

As a result of Tsarukyan's dropout, lightweight contender Renato Moicano is stepping into the main to challenge Makhachev for the 155-pound title on short notice. Moicano was previously scheduled to face fellow veteran contender Beneil Dariush on the pay-per-view card.