The UFC 311 event was thrown into temporary dissaray one day before it's due to begin Saturday, the 18th of January, as main event fighter Arman Tsarukyan, who was scheduled to challenge the UFC lightweight champion Islam Makhachev, withdrew from the bout on Friday, citing a back injury.

Dana White confirms Arman Tsarukyan's withdrawal due to a back injury; Islam Makhachev now faces Renato Moicano at UFC 311.

Check out how the MMA community reacted to Renato Moicano replacing Arman Tsarukyan in UFC 311 title fight vs. Islam Makhachev.

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.

Set to take place at the Intuit Dome in Los Angeles, CA, UFC 311 was supposed to feature a rematch between UFC Lightweight Champion Islam Makhachev and Arman Tsarukyan in the night’s main event after the undefeated Umar Nurmagomedov challenges UFC Bantamweight Champion Merab Dvalishvili in the co-main event.

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.

Dana White announced a major change to the UFC 311 pay-per-view card this Saturday in Los Angeles. Just hours before the official weigh-in on Friday, White and the matchmakers got word that Arman Tsarukyan has an ailing back and that he wouldn’t be able to compete this weekend against Islam Makhachev.

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.

The weigh-ins for UFC 311 in Los Angeles, California had been apace on Friday morning for over an hour when Red Corner MMA dropped the shocking news that Armenia’s Arman Tsarukyan, who was to fight for UFC gold for the first time, suffered an injury and is out of tomorrow’s pay-per-view main event.

Islam Makhachev's fourth UFC lightweight title defense now looks a lot different than what he was preparing for. And yet, that's no problem for the champion. Makhachev (26-1 MMA, 15-1 UFC) was preparing for months to defend his belt against Arman Tsarukyan in the main

The Dagestanis strive to become the first teammates to win a belt in the co-main event and retain a belt in the main event Saturday night at Intuit Dome