Alonzo Mourning might not be done playing basketball yet.

His recovery from kidney transplant surgery is going well and he wants to running and lifting weights. He might even want to play basketball by the end of the regular season.

His doctor, Gerald Appel does not think a return to the NBA and the New Jersey Nets is out of the question.

It could very well come up," Appel said Wednesday in a telephone interview. "The one thing Alonzo has never had is an N.B.A. championship, and if the Nets are contenders, this could be an issue. I'm not writing it off. As well as I've known Alonzo the last three and a half years, I know that it's in the back of his mind. So it has to be in the back of my mind, too."