Despite the likelihood of resting his back for the remainder of the week, there's optimism that Embiid will be fit to face the Knicks on Monday, league sources said.
Embiid, 23, sat out consecutive losses to Chicago and Sacramento in recent days. The Sixers have lost seven of eight games, dropping to 14-16 on the season.
Embiid, averaging 24.1 points, 11 rebounds and 1.9 blocks, has emerged as one of the NBA's most dominant players this season. He missed his first full two seasons with foot injuries and played 31 games in 2016-17.
This season, the Sixers have lost six of seven games without Embiid in the lineup. He played a career-high 49 minutes in a triple-overtime loss to Oklahoma City on Friday.
He signed a five-year, $146.5 million maximum contract extension in October.