The Celtics seemed to have Game 4 clinched on several occasions in overtime against the Chicago Bulls before Ben Gordon sent the game into double overtime with a 3-pointer.
Glen Davis controlled the overtime tip against Joakim Noah and grabbed a rebound of a John Salmons drive before Ray Allen provided a 5-point lead. But the Bulls cut the deficit to 105-103 on a Salmons '3' out of a timeout, before Pierce made it 107-103 with 1:30 remaining and Kirk Hinrich pulled the Bulls within 2 six seconds later.
The Celtics suffered a reversal of fortune which appeared to place the Bulls in control.
Pierce lost possession out of a timeout and Scalabrine committed a clear-path foul on Hinrich, who cut the Bull deficit to 107-106 with 26.6 seconds to play. Davis grabbed another rebound off a missed Gordon drive, Brad Miller departing with 19.5 seconds remaining after committing his sixth foul. Pierce hit one foul shots 0.6 seconds later, the Bulls calling timeout with 17.1 seconds to play. Gordon was fouled by Davis, missed the first foul shot, and cut the deficit to 1 with 9.8 seconds to play.
Ray Allen then made it 110-107 with 9 seconds remaining, but Gordon tied the score with a '3' 4.5 seconds later. Rajon Rondo's jumper was short off the dribble at the buzzer.