The AP reports: Ray Allen took a perfect pass from Paul Pierce and buried a baseline 3-pointer with 0.5 seconds left to give the Celtics their 12th straight victory, 100-99 over the Philadelphia 76ers on Tuesday night… Pierce scored 29 points, Allen had 23 and Glen Davis had 12 points and 11 rebounds… Andre Iguodala scored 22 points and Andre Miller had 21 for the Sixers.