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Billups, 35, suffered the injury in Wednesday's game against the San Antonio Spurs. He practiced lightly Thursday and was a game-time decision for Friday's game.
"We want to be smart about it," Clippers coach Vinny Del Negro said before the game. "It's a long season and we're just starting this."
The Clippers play Portland on Sunday, Houston on Wednesday and Milwaukee on Saturday -- all three at home -- before their first back-to-back of the season on Jan. 10 and 11.Pedro Moura is a reporter for ESPNLosAngeles.com.