Ukrainian boxing star Vasyl Lomachenko made a statement on Saturday (Dec. 9), when he dominated Guillermo Rigondeaux to retain his WBO junior lightweight title.

In front of a sellout crowd of over 5,100 at the Theater at Madison Square Garden, the fight was the first between two-time Olympic gold-medal winners.

Lomachenko easily outboxed Rigondeaux throughout the entire fight, until the once-undefeated Cuban fighter quit on his stool after the sixth round, with an injured left hand.

For Lomachenko, its the fourth straight opponent to quit, following Miguel Marriaga, Jason Sosa and Nicholas Walters.

After the fight, Loma said he should be nicknamed “No Mas ‘Chenko.”

"Lomachenko has made Rigondeaux quit!"

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Lomachenko (10-1, 8 KOs) defended and retained his junior lightweight world title for the fourth time on Saturday in a battle between two of the world’s elite pound-for-pound fighters.

“I lost, no excuses,” Rigondeaux said after the fight, through an interpreter. “I injured the top of my left hand in the second round. He’s a very technical fighter. He’s explosive. I’m gonna come back because that’s what I do. The weight was not a factor in this fight. It was the injury to my hand.”

The loss was Rigo’s first since a 2003 amateur bout.

Lomachenko’s promoter, Bob Arum of Top Rank Boxing, calls him one of the greats. “I think [Lomachenko is] the most unbeatable fighter I’ve ever had,” he said. “The only one that was different was [Muhammad] Ali before the 3½ years [he was idle].”