Here are the injury updates, courtesy ESPN Boston's Chris Forsberg:
Celtics center Jermaine O'Neal missed practice Saturday to undergo a right-knee MRI and is a game-time decision for Sunday's matinee versus the Memphis Grizzlies.
Coach Doc Rivers initially suggested that the MRI was on O'Neal's left knee and was a regularly scheduled visit to monitor the chronic injury (he also suffered a bone bruise on his left knee cap last month in the first meeting with Orlando). The team later clarified it was the right knee.
Elsewhere on the injury front, Rajon Rondo participated in the light 45-minute session and reported no abnormal soreness with his right wrist in returning to the court Friday after missing the previous eight games. He was sporting a grisly shiner below his right eye, but said any of his struggles Friday were in no way related to the eye (which simply needed to be iced during the game to relieve puffiness after catching a stray hand from New York's Iman Shumpert).
Keyon Dooling (right hip-pointer) participated in a second-unit walkthrough at the end of the session and Rivers suggested he's getting closer to a return. Marquis Daniels (mild right ankle sprain) did not engage in any activity, which would make him doubtful for Sunday's game.
"Keyon is close, but he just can’t breakthrough," said Rivers. "We thought he’d be back a couple games ago and he did some stuff and got sore again, so we just don’t know."
I'm pretty sure Jermaine O'Neal is going to have full-body MRIs every week.
As for Rajon Rondo, he elaborated on his lack of basketball activity since the injury. Yesterday was the first time he shot a basketball since getting hurt. He hopes to ditch the wrist brace in the next game or two.