LOS ANGELES: Viktor Postol floored Lucas Matthysse with a straight right hand in the 10th round to keep his unbeaten record intact and claim the vacant WBC super lightweight title on Saturday.

The Ukrainian nailed Matthysse with a vicious right hand over a left jab that sent the Argentine to the canvas and ended the fight at the StubHub Center stadium in Los Angeles.

“I can assure you this is not going to be my last knockout,” said Postol, who improved to 28-0 with 12 knockouts. “I took a few hard shots. I can take a punch.”

Matthysse (37-4, 34 KOs) wasn’t able to handle the taller Postol, who had a substantial height and reach advantage but was regarded as the underdog.

Following the knockdown in the 10th, Matthysse — famed for his punching power — opted not to get back to his feet and he was counted out by referee Jack Reiss.

Matthysse was rubbing his left eye with his glove while on the canvas on one knee. He said he chose not to continue because he knew he had suffered some kind of eye injury from the hard punch.

“I felt something pop in my eye so to protect my eye I stayed down,” he said.

Postol did a lot of clinching throughout the fight but he also showed he can take a punch as Matthysse hit him with all he had at one point.

By the third round Postol had settled into a nice rhythm. He kept Matthysse at bay with his jab and his sideways movement prevented his opponent from getting set and being able to land.

A lunging Matthysse left hook at the end in the 10th was answered with a counter right on the chin and just like that Matthysse dropped to the canvas. He dabbed at the eye as Reiss began his count then stopped the fight at 2:58 of the round.

The unheralded Postol said he hopes that this win lands him a shot at WBO champ Terence Crawford.

“It would be a pleasure to meet him. I want to prove myself to American boxing fans,” Postol said.

Matthysse on the other hand might have lost more than just a fight Saturday.

Before the defeat there was talk he was in line for a fight with Filipino superstar Manny Pacquiao if he could get past Postol and look good doing it.

Broner triumphs

In Cincinnati, Adrien Broner stopped former world champion Khabib Allakhverdiev in the 12th round Saturday in front of his home crowd in Cincinnati to capture the WBA super lightweight title.

The 26-year-old American Broner, who improved to 31-2 with 23 knockouts, picked up his fourth world title in four different weight classes.

Broner was pounding the Russian at will with combination punches in the 12th when referee Harvey Dock stepped in to stop the punishment.

With Allakhverdiev (19-2, nine KOs) unable to fight back Dock stopped it at 2:23 of the round, awarding the technical knockout to Broner.

DeGale to defend IBF belt

James DeGale will make the first defense of his IBF world super middleweight title against former champion Lucian Bute in the challenger’s home country of Canada on Nov. 28.

DeGale became the first British boxer to add a world professional title to an Olympic gold medal by beating Andre Dirrell in Boston in May.

The 29-year-old DeGale says, “I went on the road to win my title and my first defense is on away soil as well, but I’m very comfortable with fighting abroad.”

Bute won the IBF belt in Montreal in 2007 at the Bell Center and wore it for more than five years, with nine successful defenses, losing to Carl Froch.

Bute says “I lost my title in England against an English fighter and now I will box in Quebec against another English boxer.”