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.

After Arman Tsarukyan fell out of the main event rematch with injury on one days’ notice, Makhachev (27-1 MMA, 16-1 UFC) got the job done against Moicano (20-6-1 MMA, 12-6 UFC) courtesy of a first-round submission triumph in the headlining fight at Intuit Dome in Inglewood, Calif.

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.