New Jersey Nets forward Kenyon Martin sprained his right knee after being fouled hard by Golden State's Antawn Jamison reports Liz Robbins of the New York Times.

Martin will have an MRI today to determine the seriousness of the injury. The injury occured the same night when Nets center Dikembe Mutumbo was returning to the lineup after missing most of the season with torn ligaments in his wrist.

While the team played well and still managed to win, the concern was clearly on the impact this could have going into the playoffs.

"This puts a damper on the win," Coach Byron Scott said. "Because not only did we get Dikembe back, but Kenyon was playing so great. He was really playing at a very high level, and to not know what exactly the situation is, it's not a great feeling."

Jason Kidd said: "He's such a strong person. He can take a lot of pain or play hurt, but when he said he couldn't get through it, then you start to wonder if it's bad."

One person, however, wasn't too concerned.

"Kenyon is one of the toughest guys I've ever met," Jefferson said. "He'll be fine."

Meanwhile, Mutumbo's return was one of the good signs amid the loss of Martin.

"I think that motivated everybody, to see a 7-foot-2 guy diving for the ball after just coming off an injury of his wrist," Kidd said. "I don't think he knows how much that sparked everybody on the floor."

Mutumbo said:"I didn't even think about it."