Boston Celtics center Robert Williams underwent successful arthroscopic surgery on his left knee Thursday and is expected to miss 8-12 weeks as he recovers.

Celtics center Robert Williams told reporters that he’s now “day-to-day” to return after he had knee surgery in September that’s kept him sidelined for the entire season up to this point.

Celtics big man Robert Williams should return to the team this week. It could be a pivotal moment for a team that excels on both ends.

Robert Williams won't be hitting the floor for the Celtics for a few more months. But the big man was pretty happy to be back with his teammates at Monday's Media Day in Canton.

Robert Williams suffered a hamstring injury in the Celtics' loss to the Nets, causing him to miss his 37th game of the season on Sunday. Read more on Boston.com.

“Robert Williams was throwing up during the game,” Charania said on Stadium’s NBA Finals preview show “He only played 14 minutes last night. He was coming in and coming out of the game.

Celtics Report: Former Celtics big man Robert Williams facing potentially season-ending knee surgery Robert Williams has been plagued by injuries over his last few seasons in the NBA.

Former Celtics big man Robert Williams has been bitten by the injury bug once again. According to ESPN’s Adrian Wojnarowski, the current Trail Blazers center will require right knee surgery and ...