Former NBA player Channing Frye believes the Boston Celtics have started the 2019-20 NBA season so well because the head coach’s system runs better with Kemba Walker at point guard than it did with Kyrie Irving. Frye told NBA TV’s “Handles” the offseason point guard change has helped the other Celtics players flourish to the team’s overall benefit. “I think it is (designed to excel without a superstar),” Frye said of Stevens’ scheme. “I think for them, less is more. “They drafted really well, they made some good acquisitions when they had Al Horford and Gordon Hayward. Those guys fit into Brad Stevens’ system and they excel in that.