Isaiah Thomas and Kelly Olynyk were on top form for the Celtics.
The Boston Celtics finally got the job done as they won their series decider with the Washington Wizards to advance to the NBA play-off conference finals.
The Celtics had led 2-0 and 3-2 in the best-of-seven contest but were twice pegged before a 115-105 win in game seven sent them through to a meeting with the Cleveland Cavaliers.
Isaiah Thomas top scored with 29 points, adding 12 assists, while Kelly Olynyk registered a post-season best of 26.
Bradley Beal got 38 points for the Wizards but their campaign comes to a disappointing end.
