WALTHAM — When the curtain lifted on the Celtics  practice sessions yesterday there was one player missing. Rajon Rondo  is the latest victim of the flu that has swept through the team recently. He took part in film session and a walkthrough and then the team sent him home.
Doc Rivers  said that he expects Rondo will play, but he added, “I don’t know how he’s going to feel.”
Rivers said he had been throwing up and was sent to the hospital for IV work.
Allen, who will have a big hand in defending Dwyane Wade , said he is feeling better.
“I feel good today,” he said. “I was a little winded, but I expected that. Tomorrow should be a little better.”