Trevion Williams set up Juhann Begarin and others with a dynamic passing performance in his Celtics debut, saying at practice on Sunday that he's always embraced that aspect of the game and wants to be someone who helps teammates improve. JD Davison, Matt Ryan and Ben Sullivan sounded stunned by the big man's ability to move the ball, which Williams admitted is unique for his position. Williams talked about his unconventional route off Purdue's bench to the NBA and Sullivan talked about what he's looking for from the Celtics defensively heading into back-to-back games against the Bucks and Warriors.