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
History of the Boston Celtics The Celtics won two more titles in the 1970s under coach Tom Heinsohn, and three more in the 1980s under the leadership of forward Larry Bird. After a 22-year drought, the Celtics got their latest title in 2008. The Celtics were formed in 1946 as a team in the Basketball Association of America, and became part of the National Basketball Association after the merger of the BAA and the National Basketball League to form the NBA in the fall of 1949. In 1950, the Celtics became the first franchise to draft an African American player, signing Chuck Cooper. The Celtics