LOCKED ON CELTICS - Sept. 20: Avery Bradley's improvements, Marcus Smart's role and the rest of the SG breakdown

Summary: MassLive's Jay King and Red's Army's John Karalis analyze the Boston Celtics' shooting guard situation. They break down Avery Bradley's improvements, Marcus Smart's potential role change, Terry Rozier's possible playing time, and what to expect from Gerald Green, among a host of other topics. #BostonCeltics #Celtics #NBA