By Mark Eisner: Unbeaten middleweight contender Kamil Szeremeta (21-0, 5 KOs) destroyed an over-matched Oscar Cortes (27-5, 14 KOs) by a 2nd round knockout on Saturday night on the undercard of Gennady Golovkin vs. Sergiy Derevyanchenko on DAZN at Madison Square Garden in New York.

Cortes, 26, was knocked down twice by Szeremeta. The fight was halted by referee : Benjy Esteves Jr. at 0:45 of round 2.

Kamil Szeremeta ended the fight with beautiful combination

Szeremeta, 29, dropped Cortes with a four-punch combination in the 2nd round. The badly hurt Cortes rolled around on the canvas before attempting to get back to his feet. He then fell back down. At that point, the referee helped Cortes back to his corner, and the fight was stopped by the ringside doctor.

In round 1, Szeremeta caught Cortes with a hard left hook to the head that knocked him down. Cortes never saw the shot coming, and he hit the deck hard.

Nikita Ababiy stops Isiah Seldon

Undefeated super middleweight prospect Nikita Ababiy (7-0, 6 KOs) looked sensational in stopping Isiah Seldon (13-3-1, 4 KOs) by a 1st round knockout.

Brian Ceballo defeats Ramal Amanov

Unbeaten welterweight prospect Brian Ceballo (11-0, 6 KOs) put on a clinic tonight in throwing blistering combinations to stop previously unbeaten Ramal Amanov (16-1, 5 KOs) by a third round technical knockout.

The ringside doctor advised that the fight be halted due to an injured cheekbone. The official time of the stoppage was at 1:20 o round 3.

All in all, it was a good performance by Ceballo. He landed some big shots, and was hitting Amanov at will. The only negative that you can say about Ceballo’s showing tonight was the way he was leaving himself open for Amanov’s counters. Ceballo had no respect for Amanov’s power, and he was trying hard to get him out of there.

In the future, Ceballo will need to improve his defense when begins facing bigger punchers. He won’t be able to get away with just throwing punches and leaving himself open. Anyone can tee off a punching bag, but it’s a different story when you’ve got an opponent with some pop in their punches. Ceballo will need to show defense if he’s to go anywhere in boxing. The good news is Ceballo is still young at 25, and he’s got plenty of time to keep improving. But he’s got to treat the early portion of his professional career like it’s his amateur. He didn’t have a long amateur career like some fighters.