NBA: Boston 101, Philadelphia 85 BOSTON, May 21 (UPI) -- Brandon Bass sparked a Boston rally with 18 third-quarter points Monday and the Celtics downed Philadelphia 101-85 to grab a 3-2 playoff series lead. Bass ignited a 14-2 run during a five-minute stretch that saw Boston erase a six-point deficit and take control of the contest as the Celtics pushed Philadelphia to the brink of elimination in their Eastern Conference semifinal series. The Boston forward finished with 27 points while Kevin Garnett added 20 and Paul Pierce contributed 16 in the victory, in which the Celtics bounced back from a 92-83 Game 4 loss. Rajon Rondo added13 points and 14 assists for the victors. Elton Brand netted 19 points for the 76ers, who will try to stay alive in Wednesday's Game 6 in Philadelphia.