Someone just compared Grant Williams to Sullinger and despite my initial hatred of the comparison, it actually may not be a bad one. Sullinger's rookie season he played very good team defense (in Garnett's spot while he was on the bench), and basically just focused on his strengths, which was taking up space and rebounding. It was after that (and about 50lbs) that he started to be a problem. I think Grant has the right body to stay as the good version of Sullinger (and doesn't have an existing back injury, which is a huge plus)