76ers–Celtics rivalry 76ers–Celtics rivalry The 76ers–Celtics rivalry is a National Basketball Association (NBA) rivalry between the Philadelphia 76ers and the Boston Celtics. The two teams have the most meetings in the NBA playoffs, playing each other in 21 series, with the Celtics winning 13 of them. The 76ers are considered to be the Celtics' second greatest rival, after the Los Angeles Lakers. The Syracuse Nationals and Boston Celtics played in the Eastern Division in the 1950s. The Nationals beat the Celtics in three straight playoff series in 1954, 1955, and 1956, winning the NBA Championship in 1955. After the 1956 season the
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