How Heat's P.J. Tucker paved the way for Celtics' Grant Williams, as told by their college coach Rick Barnes | CBS Sports Headlines How Heat's P.J. Tucker paved the way for Celtics' Grant Williams, as told by their college coach Rick Barnes Tucker and Williams are connected by more than … Continue reading How Heat's P.J. Tucker paved the way for Celtics' Grant Williams, as told by their college coach Rick Barnes