On Sunday Leon Powe made his first appearance at a Boston Celtics game since spraining his right knee against the Chicago Bulls on March 17. Powe is scheduled to undergo further evaluation from team doctors today. He expects to return a few games before or during the playoffs. “I've been through a lot of knee problems a whole lot worse,” he said. “Just a few weeks, three-and-a-half weeks, that isn't anything to me. But I would like to get back into action a little bit before the playoffs. But however I feel, that's where I'm going to go from there.” For more Celtics news, check out our basketball blog, Green Street .