Leon Edwards delivered the head kick heard "round the world" on Saturday night.
Edwards knocked out Kamaru Usman in the fifth round on a left kick to the head to claim the welterweight title at UFC 278 in Salt Lake City.
Usman had controlled the entire fight and was beating Edwards handily until the challenger connected at the 4:04 mark of the fifth and final round. Usman led 39-37 on all three judges' cards.
"I can't put it into words," Edwards said.
Edwards snapped Usman's 15-fight winning streak, one shy of Anderson Silva's UFC record.
The fight was a rematch of a December 2015 bout, won by Usman via unanimous decision. Edwards has not lost since that fight.
Edwards improved to 12-2 (1 NC) in UFC.
Usman had five successful title defences since defeating Tyron Woodley for the welterweight belt in March 2019.


Khawaja defies the obituaries with half-century in third Ashes Test
FIFA launches $60 ticket tier amid criticism of 2026 World Cup pricing
Abu Dhabi Knight Riders snap Desert Vipers streak in one-run thriller
Dembele named FIFA player of 2025, Bonmati wins women's award
Australia's Green becomes IPL's most expensive overseas player