Tom Loeffler, who co-promotes Roman 'Chocolatito' Gonzalez with Teiken Promotions, believes the one time pound-for-pound top fighter is still capable of regrouping after Saturday's stunning defeat.

At the StubHub Center in Carson, Gonzalez was knocked out cold in the fourth round of his rematch with Srisaket Sor Rungvisai of Thailand.

The defeat comes six months after Chocolatito lost controversial majority decision to Sor Rungvisia on March 18 in New York. That contest was bloody, with Gonzalez going down in the third round and suffering two bad cuts from head clashes.

Sor Rungvisai controlled the rematch from the start, rattling Gonzalez with punches to the head and body.

In the fourth round, Gonzalez was dropped hard and never full recovered. He tried to fight Sor Rungvisai off, but got clipped once again - right on the chin - and this time he went down for good.

In the rematch, however, Gonzalez never looked comfortable and did not show much.

Following the fight, 30 year old Gonzalez (46-2, 38 KOs) was taken to a local hospital for observation and released with a clean bill of health.

Gonzalez looked like a done fighter in the bout, but Loeffler does not believe that's the case.

"I don't think he's done. When you fight a guy like Srisaket, he took the opp of winning the lottery. He beat the number one pound-for-pound fighter and beat him in New York, and then he beat him more convincingly the second time. Now he has to be considered one of the best in the world. You saw Roman really packed the house, and Srisaket came into a hostile environment and proved he is a true champion. He has tremendous punching power," Loeffler said.

Sor Rungvisai (43-4-1, 39 KOs), also 30, moves on to bigger things - like a mandatory defense against Juan Francisco Estrada, who won a WBC final super flyweight eliminator earlier that night.