The Philadelphia area had three teams that played in the American Basketball League; the league was the product of an early attempt at forming a top-level national professional basketball league. The Philadelphia Warriors played in the ABL in the 1920s. The Philadelphia Sphas played from 1917 to 1949, winning seven ABL championships. With the rise of the NBA, the ABL ceased to be a major league, and the Sphas became the touring opponent of the Harlem Globetrotters. The Sphas were renamed the Washington Generals in 1952. Wilmington also had a team in the ABL: the Wilmington Bombers played in the league in the 1940s.