BROOKLYN, NY - FEBRUARY 24: Robert Williams III #44 of the Boston Celtics looks to shoot a free throw during the game against the Brooklyn Nets on February 24, 2022 at Barclays Center in Brooklyn, New York. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this Photograph, user is consenting to the terms and conditions of the Getty Images License Agreement. Mandatory Copyright Notice: Copyright 2022 NBAE (Photo by Nathaniel S. Butler/NBAE via Getty Images)

Boston Celtics center Robert Williams III underwent a successful arthroscopic left knee surgery as announced by the club this Friday. 

Contrary to the earlier reports, Williams will be shelved for an extended six to eight weeks to fully recover. With that, he will be out on the Celtics’ training camp, preseason and initial parts of the forthcoming 22-23 campaign.

This recent surgery serves as the second one that Williams has taken for six months. Back in March, the big man had an initial partial left knee meniscectomy procedure to repair his torn meniscus.

Williams averaged 10 points, 9.6 rebounds and 2.2 blocks in 61 occasions for Boston last season.