Just got done watching the replay. First half reminded me of last year's Celtics. Everyone jacking 3's, little ball movement. Not a lot of defense. Kind of an indifferent effort.
2nd half they played better. Grant Williams a I thought played well. His size works against him. At the same time he does all the little stuff that wins you games - i.e. taking charges, hustling, making the right pass etc. I think his ability to make the rotation is going to be determined by both his 3 point shooting and his ability to get his shot off against longer players.
I do think they were taking a long look at Onuaku. He has some skills but I'm not sure that he'd be an upgrade on anyone they already have on the roster.
Robert Williams passing continues to impress. If he can improve on his defense, I do think he has a chance to get into the rotation. He still has no real moves and he doesn't shoot it very well, but if you can pass, defend and rebound you can get on the floor in the NBA. He is cat quick and can run out at perimeter shooters so I do think can get consistent minutes - if not at the start at least at some point during the season.