Joel Embiid did not practice on Monday and is listed as doubtful for the Sixers' game Tuesday against the Clippers.
Embiid hyperextended his left knee in the Sixers' 93-92 win over the Blazers Friday. He said after the game that the knee was fine, but the Sixers are clearly exercising caution with their young star center. Embiid will also rest on Wednesday against the Bucks.
"I knew it was OK. I just landed the wrong way," Embiid said Friday. "I'm great. The knee's fine. They did an MRI and stuff, everything looked good."
The Sixers are calling it a left knee contusion. They're 13-17 when Embiid plays and 2-10 without him.
Jahlil Okafor (right knee soreness) was limited at Monday's practice but is probable to play the Clippers.
Okafor had 12 points, four rebounds and three blocks in 30 minutes in Saturday's 110-93 loss at Atlanta.
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CSN Philly's Jessica Camerato contributed to this report.