The Maine Celtics' season is over after they lost to the Osceola Magic in the Eastern Conference Finals of the NBA G League.The Magic clinched the series Sunday night with a 135-119 win in Kissimmee, Florida.JD Davison scored 34 points and added 11 assists for Maine, but it was not enough to overcome 42 points from Osceola's Mac McClung, which set a new franchise playoff record.Maine has never won an NBA G League championship, but this was the third season in a row the team made the postseason and second season in a row they went to the Eastern Conference Finals. Osceola advances to face the winner between Stockton and Austin in the NBA G League Finals.