The UFC is headed to the “City of Champions” for UFC 311. The main event is a highly-anticipated rematch title fight between Russian Islam Makhachev (26-1-0) defending his lightweight championship belt against Armenian fighter Arman Tsarukyan (22-3-0).

Islam Makhachev retains the lightweight title with a first-round submission win. Here are all of the results and best highlights from UFC 311.

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

Lightweight champion Islam Makhachev submitted 10th-ranked Renato Moicano at 4:05 of the first round Saturday night at UFC 311 for his 15th straight victory

Islam Makhachev stopped Renato Moicano to retain his UFC lightweight title in stunning fashion at UFC 311 in California.

Islam Makhachev made quick work of Renato Moicano on Saturday night, locking in a D'arce choke to submit him in Round 1 and retain his title at UFC 311.

Headlining the card is a battle for the undisputed UFC lightweight title as reigning champion and No. 1-ranked pound-for-pound fighter in the UFC, Islam Makhachev, puts his 155-po