Ray Allen chose to break his shooting slump at the perfect time.

With 2 seconds left on the clock, the guard made a tie-breaking three-pointer that lifted the Boston Celtics past the Chicago Bulls 118-115. Ray Allen finished with a remarkable 30 points for the defending champs, who have now tied the series 1-1.

Not to be outshined was Chicago Bull guard Ben Gordon, who went on an offensive onslaught with a playoff career-high 42 points. Gordon tied the game with 12.3 seconds left in regulation and the whole building thought the game would go to overtime.

Boston set up a play as Rajon Rondo found Ray Allen at the right side to score the game-winning basket.

The next two games will be played in Chicago, where the Bull will try to protect home court advantage. 

Glen Davis scored 26 points for Boston, who are playing without their emotional leader Kevin Garnett. Rondo, who had a stellar game 1 performance, notched a triple-double with 19 points, 16 assists, and 12 rebounds. Paul Pierce added 18 points.

For Chicago, John Salmons and Brad Miller had 17 and 16 respectively. Derrick Rose, who scored a phenomenal 36 points in game 1, was put in check by the Celtic defense. The rookie only had 10 points during the contest.