you are an alarmist, it's probably best to stop reading. There is no reason to spread unwarranted concern before the test results come back.

Here's the bad news: Antoine Walker twisted his right knee during last night's game and will undergo an MRI today. Walker, who has a well-deserved reputation as the Celtics' ironman and stoically plays through bumps, bruises, and muscle strains, sounded more than a little concerned when he spoke briefly about the injury after the game.

''I twisted my knee on one of the plays and it's killing me right now,'' said Walker. ''I have an MRI tomorrow and hope it's nothing. It was sometime in the second half. I don't know what play it was. It just started hurting me real bad.''