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.

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 ride to UFC 311 had some last-minute bumps in the road when would-be lightweight title challenger Arman Tsarukyan suffered a back injury Friday that forced his withdrawal from a main-event rematch with champion Islam Makhachev, resulting in a Renato Moicano detour on a day's notice.