The first UFC pay-per-view of the year is upon us, with UFC 311 taking place this weekend in Los Angeles. The Ultimate Fighting Championship event pits Islam Makhachev vs. Arman Tsarukyan in a highly-anticipated rematch,

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.

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.