After a hot start offensively, the Celtics  put the clamps down defensively, holding the Blazers to just three field goals in the quarter to take a 56-38 lead into halftime.
Portland scored just six points in the first six minutes of the quarter as the Celtics built a 45-31 lead with their second unit. The starters picked it up from there as Kevin Garnett  knocked down his first 3-pointer of the season on a desperation heave as the shot clock expired. Garnett followed that with a length-of-the-floor layup off a feed from Rajon Rondo .
The Celtics physical defense got to the Blazers late in the half as Kendrick Perkins  and Andre Miller  became entangled under the basket. Perkins and Juwan Howard  were assessed double technical fouls
Rondo capped off the quarter with a buzzer-beating 20-foot jump shot. He has eight points and nine assists, while Garnett leads all scorers with 13 points and seven rebounds.