Rotoworld said Williams impressed with his defense and shotblocking.
I watched the first quarter. Starting Theis rolled my eyes. He's not a starter.
Then in came Kanter, and in two minutes, he showed his offensive rebounding strength--and his defensive weakness. He offered no effort at stopping a drive in the paint, and then went down the court and scored on an offensive rebound. And then got another offensive rebound the next time down the court. He has a knack for being around the basket for offensive rebounds.
Then came Robert Williams, who is barely recognizable from the skinny rookie of last year. Looks like he gained 20 lbs of upper body strength. No doubt a defensive force, as he showed. Impressed the most by him. Looks like he and Smart are the Celtics defense. Don't know how you can keep Smart from starting. Hayward or Brown should come off the bench.
I didn't see Poirier, but I did see Tackomania when they had about a 50 pt lead. He is definitely a force in the paint to deal with for the opposition. He's pretty strong and towers over everybody else. Gets easy shots and blocks.
Ainge has thrown four big guys at Stevens, who is not a big guy coach. We'll see how this plays out.