Islam Makhachev submitted Renato Moicano in one round to successfully retain his lightweight title at UFC 311 and set a new record.
The Russian has now defended his belt four times in a row, a first in the UFC.
The record was previously held by legends Khabib Nurmagomedov, Benson Henderson and PJ Penn, who managed three defensemen.
Makhachev, 33, staked his claim as the UFC's best fighter with an unstoppable performance Saturday night in Inglewood, California.
“I love this belt,” Makhachev said. “If someone wants that belt, come to the cage.”
Nurmagomedov has been in Makhachev's corner, having taken on a coaching role since retiring from fighting.
Brazilian Moicano (35 years old) intervened 24 hours later on Friday but was no match for the dominant champion.
It was less than a minute after the first bell when Makhachev trapped a struggling Moicano in a Brabowo choke, forcing the challenger to tap almost immediately.
“I'm always looking for the end,” Makhachev said.
“I'm not just talking. All fight week, all of my camp, all of the media, if my opponent gives me even a little chance, I'm going to finish tonight.”
Makhachev also extended his current winning streak to 15, improving his overall record to 27 wins and just one loss.
UFC president Dana White has recognized Makhachev as his personal best after spending the past 12 months defending heavyweight champion Jon Jones.
