Robert Williams shows flashes of promise before premature end to debut

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LAS VEGAS -- After a disappointing first two weeks as a Celtic, there was probably no player more eager to get on the floor during summer league than Robert Williams on Friday night.

The 27th overall pick came off the bench in his Boston debut and was very active in his first six minutes, knocking down a midrange jumper and throwing down a dunk over that span while skying for a couple of rebounds.

The 6-foot-9 center was hobbled in the final minutes of the frame, though, after banging knees with a Sixer and limped off the court at the end of the quarter. He eventually went back to the locker room with trainers and was ruled out for the game due to a knee contusion.

However, the rookie revealed after the game that he was dealing with additional complications in that knee.

"I had a case of tendinitis and it kind of got bumped," Williams said after finishing with four points and two rebounds. "I’ve been feeling sore a little bit, but the trainer has been doing a great job giving me what I needed. The coaches are just more worried about my body, worried about protecting it and not wanting to risk anything."

The Celtics and Williams were unclear about his availability for Saturday's game against the Nuggets but the issue does not sound like something that will sideline him over the long term.

"I’ve been dealing with it for a little bit but the great trainers we’ve got in Boston have it under control," Williams explained.

The injury gave Celtics fans just a glimpse of how Williams has integrated himself during his first week as a Celtic, but it's evident the impact the system is making on him already.