The AP reports: Lou Williams scored 27 points and Thaddeus Young added 21 to help the Philadelphia 76ers beat the NBA champion Boston Celtics 98-92 on Wednesday night in the exhibition opener for both teams. Williams was 7-of-12 from the field and 12-of-13 from the line. Leon Powe led the Celtics with 12 points and Tony Allen had 11. The Celtics’ Big Three—Ray Allen, Paul Pierce and Kevin Garnett—got off to a fast start, but played limited minutes.