New Orleans Pelicans star Zion Williamson has been diagnosed with a left hamstring strain and will be out indefinitely, the team announced Saturday.

Williamson is expected to be out for several weeks, sources told ESPN’s Shams Charania.

The Pelicans said medical imaging taken Saturday morning confirmed the injury.

Williamson suffered the injury in the second quarter of the Pelicans’ loss to the Cleveland Cavaliers on Wednesday, knocking himself out before returning to score 23 points in the second half. He did not play in Friday’s loss to the Orlando Magic, his fourth missed game of the season.

The injury is a devastating blow to the Pelicans and Williamson, who team officials say is in the best shape of his career.

Since the Pelicans selected Williamson first overall out of Duke in the 2019 draft, the 6-foot-1 power forward has missed 210 of a possible 400 regular-season games.

Williamson’s injury is the latest injury for a struggling Pelicans team that was missing six of its top eight scorers, including Dejounte Murray, Trey Murphy III, CJ McCollum and Jordan Hawkins, against the Magic. Forward Herb Jones is also out due to a shoulder injury.

The Pelicans, who have lost four straight and seven of their past eight games, are off until Monday when they host the Brooklyn Nets.

This report used information from The Associated Press.