2009–10 Boston Celtics season for the twenty-first time in franchise history. The Celtics made it back to the NBA Finals after a one-year hiatus and played against the defending NBA champion and their rival, the Los Angeles Lakers. In a rematch of the 2008 NBA Finals, in which the Celtics defeated the Lakers in six games to capture their seventeenth championship, the Celtics were defeated this time by the Lakers in seven games. 2009–10 Boston Celtics season The 2009–10 Boston Celtics season was the 64th season of the Boston Celtics in the National Basketball Association (NBA). The Celtics finished with a record of 50–32,
Boston Celtics the National Basketball League and the Basketball Association of America merger. However, the Blackhawks could not field a truly competitive team until they moved to St. Louis as the St. Louis Hawks after a four-year stopover at Milwaukee. The two teams have faced each other eleven times in the NBA Playoffs, four times in the NBA Finals, with the Celtics winning ten of twelve series against the Hawks, including three out of four NBA Finals. While the Hawks have only defeated the Celtics twice out of eleven series in the NBA Playoffs, they still often managed to make their series