Both Lomachenko and the California commission members thought the fight had been stopped and began to celebrate and enter the ring until Reiss restored order.
Lomachenko defended his WBA and WBO 135-pound belts with a violent fourth-round stoppage of Britain's Crolla on Friday night, demonstrating his pound-for-pound excellence with another virtuosic display. "I always need to find a key for his defense".
The unified world lightweight champion headlined at Staples Center for the first time in his professional career and is already looking ahead to his next fight.
"I want to unify all the titles", said Lomachenko, adding he wants to fight Mikey Garcia, who holds the WBC lightweight title.
Crolla, meanwhile, had said in advance of the fight that he was prepared to "shock the world" when he was plugged into the bout as an injury replacement for IBF champion Richard Commey, but in truth it was a poor performance from the the Englishman.
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Lomachenko simply out-classed Crolla in the first few rounds, before turning up the heat in the third, where he actually almost finished the fight. Commey's injured hand forced Lomachenko's promoters to make this fight with Crolla, rather than surrender his WBA belt.
Crolla, 32, wasn't Lomachenko's first choice as an opponent. Crolla lost the title to Jorge Linares back in 2016 and lost the rematch as well.
"I want Mikey Garcia". Losing to Lomachenko is never a disgrace. "I feel like I'm in Ukraine here". "I want to thank all the fans who came to support me".
His profile has grown after headlining at Madison Square Garden and other LA venues before stepping up to Staples.
LA celebrities in attendance included Don Cheadle, Rosie Perez, director Peter Berg and Los Angeles Rams coach Sean McVay.