Check out the best photos from Islam Makhachev's first-round submission win over Renato Moicano at UFC 311 at Intuit Dome in Inglewood, Calif. (Fight and venue photos by Gary A. Vasquez, USA Today Spo

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.

Paddy Pimblett’s angry reaction to the UFC 311 main event was caught on camera. The lightweight contender watched from the comfort of his own home as 155lb king Islam Makhachev defended his belt with a first-round submission win over late-replacement opponent Renato Moicano.

Makhachev retained his title by submitting his late-notice challenger, after Dvalishvili kept his belt by handing Nurmagomedov his first loss

The Brazilian fan favorite stepped into his first UFC title shot on 36 hours’ notice. Islam Makhachev was originally booked to defend his 155lb belt against face Arman Tsarukyan, but the Armenian withdrew from the first UFC pay-per-view show of the year after suffering a back injury.

Islam Makhachev is not only the best fighter in the world, he's also the most accomplished lightweight champion in UFC history.

Renato Moicano exudes confidence as he aims to capitalize on his unexpected title shot against Islam Makhachev at UFC 311.

Gilbert Burns places a bold $50,000 bet with Islam Makhachev’s manager, confidently backing Renato Moicano to secure the win.

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.

Islam Makhachev cemented his place in UFC history Saturday night at UFC 311, submitting late replacement Renato Moicano.

Check out how much lightweight champ Islam Makhachev earned for his 4th title defense against Renato Moicano at UFC 311.