Rajon Rondo's sprained left ankle could sideline him until the New Year, Boston Celtics GM Danny Ainge said during a radio interview with WEEI on Thursday afternoon.
"Rajon, I think, will be out for a couple of weeks, anyway," Ainge said.
Rondo was helped off the court after he hurt his ankle early in the fourth quarter of Wednesday night's game against the New York Knicks. He returned and finished the game, then said afterward he expected to play against the Atlanta Hawks on Thursday night. But those plans apparently changed when the ankle swelled overnight.
"I think that Rajon is young, and he heals fast and he loves to play, to his credit," Ainge said. "I couldn't believe he was back on the court last night. He wasn't moving very well, even when he got back out on the court.
"You could tell he was still in a lot of pain, and certainly after the game it started puffing up. This morning there was a lot of swelling, and he definitely needs some time off."
Despite Ainge's estimation, Celtics spokesman Jeff Twiss clarified to The Associated Press that no official timetable had been set.
Rondo is averaging 11.2 points and a career-best 13.8 assists per game. He has missed four games with hamstring and foot problems.
Nate Robinson is expected to take Rondo's place in the starting lineup. He's averaged 7.7 points and 2.3 assists in 21.2 minutes per game.
"Nate has been playing very well for us," Ainge said, "and now he's going to have to step it up and play more minutes."