Football League (1987–2008) The AFL returned in 2010, but is a separate legal entity from the original AFL. The current league purchased the assets of the original AFL in a bankruptcy auction, enabling it to brand itself as the first league's successor. af2 (2000–2009), the Arena Football League's official minor league Many of the teams in the revived AFL are former af2 teams. In fact, the original lineup of Arena Football 1, the league that morphed into the revived AFL, included more af2 teams than former AFL teams. CFL – Continental Football League (1965–1969) FXFL – Fall Experimental Football League (2014–2015) IFL – Indoor Football League (1999–2000) IPFL – Indoor Professional Football League (1999–2001) PIFL – Professional Indoor Football League (1998) PSFL – Professional Spring Football League (1991 – Training Camp) UFL – United Football League (2009–2012) USFL – United States Football League (1983–1985; not to be confused with the current USFL) WFL – World Football League (1974–1975) XFL (2001) - Xtreme Football League Professional hockey World Hockey Association (WHA 1972–1979) - merged with National Hockey League (NHL) Pacific Coast Hockey Association (PCHA 1911–1924) International Hockey League (IHL 1945–2001) Roller Hockey International (RHI 1993–1997, 1999) Global Hockey League (Did not play, 1990) Professional rugby union PRO Rugby 2016 (succeeded by Major League Rugby 2018 to present) Professional soccer (association football) A-League (1995–2004; succeeded by USL First Division) American Football Association (1896–1907) American Professional Soccer League (1990–1994; operated as A-League in 1995–1996) American Soccer League (1921–1933, 1933–1983, 1988–1989) Continental Indoor Soccer League (CISL 1993-97) Major Soccer League aka Major Indoor Soccer League (1978–1992) Major Indoor Soccer League (MISL 2001–2008) North American Soccer League (NASL 1968–1984) United Soccer League (1984–85) USL First Division (formally 2005–2010, last competitive season was 2009; folded into USL Pro for 2011, USL Pro renamed United Soccer League in 2015 and USL Championship from 2019) USL Second Division (1990–2010; folded into USL Pro) USSF Division 2 Professional League (2010 only; compromise between the feuding USL and new NASL) Women's Professional Soccer (WPS, 2009–2011; effectively revived in 2013 as the National Women's Soccer League) Women's United Soccer Association (WUSA, 2001–2003; effective predecessor to WPS) World Indoor Soccer League (WISL 1998–2001) Xtreme Soccer League (XSL 2008-09) Professional Softball National Pro Fastpitch (2004–2021) Professional lacrosse National Lacrosse League (1974-75) American Lacrosse League (1988) Major League Lacrosse (2001–2020) — merged with the Premier Lacrosse League, with the merged league operating under the