The Celtics had possession trailing 111-108 with 15.3 left to play. Rajon Rondo dribbled the clock down and dished to Chris Johnson for what appeared to be a game-tying 3-pointer with less than a second remaining. The basket was nullified, however, when officials ruled that Johnson had a foot out-of- bounds, helping the Sixers hold on for the victory.
Tony Wroten scored 20 and Thaddeus Young added 15 points, seven rebounds and seven assists for Philadelphia, which snapped a four-game skid in its final home contest of the season.
Henry Sims contributed 13 points and Brandon Davies and Elliot Williams had 11 and 10 points, respectively off the bench.
Kelly Olynyk poured in a career-high 28 points and grabbed nine boards, Jeff Green netted 27 points and Avery Bradley added 23 for the Celtics, who have lost 15 of 18. Rondo totaled eight points, 14 assists and 11 rebounds in defeat.