WALTHAM — Ray Allen  left Celtics  practice on Saturday after getting unintentionally elbowed above the left eye and knocked to the ground by Kendrick Perkins , who was playing on the same team. Allen received stitches and is not expected to miss any games.
“The sad thing is it was a skeleton offense. There was no defense,” said Doc Rivers . “We run a lot of hand-off stuff as you know and it didn’t go well. It was a hand-off with Perk and Perk had his elbow up while he was supposed to be handing it off to Ray. And those are the ones that hurt because you don’t expect those cuts to come at that time.”
Allen hit the ground grabbing his eye, according to Rivers who initially thought Allen was joking. “All of a sudden he was laying down and all of a sudden you saw the blood and said, ‘Oh no, I don’t think he’s faking.'”
“We’re still going hard, still intense,” he said. “Unfortunately it happened but we can’t sit up here and be sad and be down on ourselves, like oh man Ray got hurt. No, we’ve still got to go out there and play.”
The Celtics open their season on Tuesday night in Cleveland against the Cavaliers .
UPDATE: Allen received five stitches at New England Baptist Hospital, according to Celtics team officials.