Russian heavyweight boxer Magomed Abdusalamov is in Roosevelt Hospital in New York in stable condition in intensive care following surgery to remove a blood clot on his brain suffered in a bout Saturday with Mike Perez at Madison Square Garden.

The bout was the HBO debut for both men and was an entertaining, but rugged scrap. Abdusalamov, 32, also incurred a broken nose and a broken left hand during the unanimous decision loss to Perez.

Nathan Lewkowicz of Sampson Boxing, Abdusalamov's promoter, told Yahoo Sports that doctors removed a small portion of Abdusalamov's skull in an effort to reduce swelling on the brain.

"We took him to the hospital just as a precaution," Lewkowicz said. "He was complaining about his hand after the fight, but when we got to the hospital, they checked him out and discovered [the blood clot]."

He said the prognosis "seems pretty positive."

Several times during the hard-nosed bout, Abdusalamov asked his corner whether he was injured. But he went the full 10 rounds, fighting hard until the end. It was his first loss in 19 pro bouts. All 18 of his previous bouts ended in knockout victory.