AUBURN HILLS, Mich., Oct. 15 (UPI) -- Chauncey Billups scored 23 points and Chucky Atkins added 17 Wednesday night as Detroit coasted to a 123-95 preseason rout of Boston. First-round pick Darko Milicic scored four points in nine minutes for the Pistons. Mehmet Okur contributed 14, Tayshaun Prince scored 11 and Elden Campbell had 10 and seven rebounds. Paul Pierce led the Celtics with 20 points and Antoine Walker chipped in 16. Marcus Banks had 11 points in 32 minutes and fellow-rookie Kendrick Perkins scored four in nine minutes. Detroit guard Richard Hamilton left in the second quarter with a bloody nose and did not return.