Boston, MA (My Sportsbook) - Ray Allen poured in 23 points, and the Boston Celtics moved into the second round of the playoffs with a 109-99 win over the Chicago Bulls, ending their grueling seven-game Eastern Conference quarterfinal series. With the exception of Boston's 21-point victory in Game 3, every other contest until Saturday had been decided by three points or less with four of them going to overtime. The teams had played a total of seven extra sessions, including the incredible 128-127 Chicago win in triple-OT on Thursday. The Celtics ended the series in regulation, thanks mostly to finishing the second quarter on a 22-2 spurt, holding the Bulls without a field goal for the final eight minutes, en route to a 52-39 halftime lead. The defending NBA champions were pushed to seven games twice in the playoffs last year, including in the first-round against Atlanta. This time, the second-seeded Celtics advanced to play third-seeded Orlando in the conference semifinals. Game 1 is Monday at 8 p.m. (et) in Boston. Allen, coming off a 51-point performance, made 6-of-14 shots from the field and nailed all nine of his free throws. Paul Pierce added 20 points and nine rebounds, while Eddie House came off the bench for 16 points, making all four of his three-point shots. Glen Davis had 15 points, and Kendrick Perkins chipped in 14 points and 13 boards. Rajon Rondo ended with 11 assists. The Celtics played the entire series without All-Star power forward Kevin Garnett, who is expected to be out for the remainder of the playoffs with a knee injury. Ben Gordon had 33 points for the Bulls, who are 0-6 all-time on the road in Game 7s of a playoff series. Derrick Rose added 18 points, Kirk Hinrich 16 and John Salmons 12 for Chicago. HASH(0x91b0d30)