Having shaken off a loss in Game 2 of the Finals, the Celtics are confident heading into a winner-take-all matchup Monday at the Expo against the Oklahoma City Blue.

The third and deciding game is 9 p.m. Monday at the Portland Expo.

Drew Peterson, JD Davison and Neemias Queta all reach 20 points as Maine starts hot and takes a 1-0 lead in the best-of-three series.

Game 1 is at 8 p.m. Tuesday, with Game 2 on Thursday in Oklahoma City (8 p.m.) and an if-necessary Game 3 on April 15 in Portland (9 p.m.).

DJ Steward scores 27 points, JD Davison adds 19, Maine erupts in the fourth quarter to win the Eastern Conference final, 99-77.

Maine pulls ahead to stay with a 17-3 run to end the third quarter.

After floating at .500, the Celtics have won 10 of their last 12 games and will host a G League playoff game Thursday.

Jordan Walsh scores with less than a second left as Maine secures the No. 2 seed in the Eastern Conference.

College Park outscores Maine 38-26 in the fourth quarter.