well. Scrapped after the 2015 season; a one-off expanded Currie Cup was held in 2016 before a successor second-level competition, the Rugby Challenge, was launched in 2017. United Kingdom American football British American Football League (BAFL) (1986) Basketball National Basketball League (1974–2003) Association football Football Alliance (1889–1892) (replaced with the second division of the Football league) Athenian League (1912–1984) Chiltonian League (1984–2000) Surrey Senior League (1922–2003) United States Professional athletics International Track Association (1972-1976) Professional baseball National Association of Professional Base Ball Players (1871–75) American Association I (1882–1891) Union Association (1884) Negro leagues League of Colored Baseball Clubs (1887), minor league Negro National League (I) (1920–1931) Eastern Colored League (1923–1928) American Negro League (1929) East-West League (1932) Negro Southern League (1932), minor league 1920–1931 and 1933–1940s Negro National League (II) (1933–1948) Negro American League (1937–1950), minor league 1951–1960 West Coast Negro Baseball League (1946), minor league Players' League (1890) Atlantic League (1896–1900) Union Professional League (1908) Federal League (1914–1915) American Association II minor league (1902–1962 and 1969–1997) All-American Girls Professional Baseball League (1943–1954) Blue Ridge League (1915–1918, 1919–1930, 1946–1950) Continental League (1960, never played) Senior Professional Baseball Association (1989–1990) Great Central League (1994) Western Baseball League (1995–2002) Canadian American Association of Professional Baseball (2005–2019) Carolina League I (1936-1938) Eastern League I (1884-1887) Eastern League II (1916-1932) New York–Penn League (1939–2020) Southern League I (1885-1899) South Atlantic League I (1904-1917, 1919-1930, 1936-1942 and 1946-1962) Professional basketball Men: AABA-All-American Basketball Alliance (1977–78) AAPBL-All-American Professional Basketball League (2005) ABA-American Basketball Association (1967–1976) - merged with the National Basketball Association (NBA) ABL I-American Basketball League I (1925–1955) ABL II-American Basketball League II (1961–1963) GBA-Global Basketball Association (1991–92, league folded midway through 1992-93 season) IBA-International Basketball Association (1995–2001) IBL-International Basketball League (1999–2001) NBL-National Basketball League (1937–1949) NPBL-National Professional Basketball League (1950–1951) NRL-National Rookie League (2000–2002) PBLA-Professional Basketball League of America (1947–1948) WBA-Western Basketball Association (1978–79) WBL-World Basketball League (1988–1992) CBA-Continental Basketball Association (1946–2009) USBL-United States Basketball League (1985-2008) Women: WBL-Women's Pro Basketball League (1978–81) ABL-American Basketball League III (1996–1998) WABA-Women's American Basketball Association (1993–1995) (2002) Amateur basketball Amateur Athletic Association Basketball (AAU 1897–1982) Professional football AAF – Alliance of American Football (2019) AAFC – All-America Football Conference (1946–1949) AFL – American Football League (1926) AFL – American Football League (1936–1937) AFL – American Football League (1940–1941) AFL – American Football League (1960–1969, now the American Football Conference of the major league NFL) AFL – Arena