The United Soccer Leagues (USL) is the organizer of several soccer leagues with teams in the United States, Canada and the Caribbean. It includes men's and women's leagues, both professional and amateur. Leagues currently organized are the USL Pro, the USL Premier Development League, the women's W-League and W-20 League and youth Super Y-League and Super-20 League. It is directly affiliated with the United States Soccer Federation, the United States Adult Soccer Association and the Canadian Soccer Association.
Founded in 1985 by Francisco Marcos, the Southwest Indoor Soccer League was first intended as a minor indoor league associated with Major Indoor Soccer League. The league began with five teams, all owned by individuals who owned or operated indoor soccer arenas in the Southwest United States. League headquarters was in Austin, Texas. In 1986, Marcos' team, the Austin Sockadillos, entered the league giving it six teams. By 1989, the league had set its sights on greater prospects than remaining a small, semi-professional indoor league. A 1989 press release stated, "It is envisioned the league will be part of the USSF's plan to professionalize soccer in the USA prior to the 1994 World Cup, and the league plans to push its teams to be considered for the "three-tiered first, second and third divisions" plan the USSF envisions for soccer."
The USL began operations in 1986 as the Southwest Indoor Soccer League, a semi-professional indoor league. The league quickly expanded and added an outdoor season in 1989. In 1991, the league renamed itself the United States Interregional Soccer League. By then, the outdoor league overshadowed the indoor league which continued to slowly dwindle in importance. By the 1997-98 season, only five teams remained indoors while the outdoor season had over a hundred teams divided in a three-division structure. This led the league to stop running an indoor league.
In 2010, the USL began to consider relaunching an indoor season. However, it decided instead to take over operations of the Major Indoor Soccer League, beginning indoor operations in 2011. The Champions were determined by a single games in 1987, 1988, 1992, 1993, 1994, 1995, 1996 and 1998. The Champions were determined by a best of three series in 1998 and a best of five series in 1989, 1990 and 1991 and a home-and-home series in 2012 and 2013.
|1986/87||Addison Arrows||7–2||Lubbock Lazers|
|1987/88||Oklahoma City Warriors||3–0||Austin Sockadillos|
|1988/89||Lubbock Lazers||3 games to 2||Austin Sockadillos|
|1989/90||Addison Arrows||3 games to 0||Phoenix Hearts|
|1990/91||Colorado Comets||3 games to 0||Oklahoma City Warriors|
|1991/92||Oklahoma City Warriors||7-2||Atlanta Magic|
|1992/93||Atlanta Magic||11-7||Arizona Cotton|
|1993/94||Atlanta Magic||8-3||Chattanooga Express|
|1994/95||Atlanta Magic||6-3||Oklahoma City Slickers|
|1995/96||Baltimore Bays||10-8||Atlanta Magic|
|1996/97||Baltimore Bays||5-4; 13-10||Tulsa Roughnecks|
|1997/98||Baltimore Bays||11-4||Tulsa Roughnecks|
|The USISL ceased operating its own indoor league in 1998.
From 2011-2014, the USL operated the MISL.
|2011/12||Milwaukee Wave||14-2; 12-10||Baltimore Blast|
|2012/13||Baltimore Blast||21-12; 8-6||Missouri Comets|
|2013/14||Missouri Comets||15–8; 4–19; 6–4||Baltimore Blast|
In 1989, the Southwest Indoor Soccer League added a summer, outdoor season known as the Southwest Outdoor Soccer League. In 1990, the league dropped both "indoor" and "outdoor" from its name as it ran both a semi-professional indoor and outdoor season. By 1995, the outdoor season had grown to such a size that the USISL, as it was known at the time, split the league into two levels, the aptly named, fully professional Professional League and the semi-professional Premier League. In 1996, the USISL added a third, higher, Select League. This was formed from the strongest teams from both the Professional and Premier League. The Select League, along with the competing A-League, both received official Division II status from FIFA. However, the A-League was in decline while the USISL was expanding. Therefore, in 1997, the A-League ceased operations and merged into the USISL Select League which was renamed the USISL A-League. From that point, the USL's three-level structure remained stable until 2010. Some teams left to start the North American Soccer League and the First and Second Divisions were merged to become the USL Professional Division.
|Season||Winner||Final score||Runner-up||Season||Winner||Final score||Runner-up||Season||Winner||Final score||Runner-up|
|1989||Colorado Comets||3-1||Addison Arrows|
|1991||New Mexico Chiles||3–0||Richardson Rockets|
|1992||Palo Alto Firebirds||1–0||Tucson Amigos|
|1993||Greensboro Dynamo||2–1||Orlando Lions|
|1994||Greensboro Dynamo||2–1 (SO)||Minnesota Thunder|
|Pro League (Division III)||Premier League (semi-pro)|
|Division II||1995 Professional||Long Island Rough Riders||2-1||Minnesota Thunder||1995 Premier||Richmond Kickers||3-1||Cocoa Expos|
|1996 Select||California Jaguars||2-1 (SO)||Richmond Kickers||1996 Professional||Charleston Battery||3-2 (SO)||Charlotte Eagles||1996 Premier||Central Coast Roadrunners||2-1||San Francisco Bay Seals|
|1997 A-League||Milwaukee Rampage||1-1 (3-0)||Carolina Dynamo||1997 D-3 Pro||Albuquerque Geckos||4-1||Charlotte Eagles||1997 PDSL||Central Coast Roadrunners||2-1||Cocoa Expos|
|1998 A-League||Rochester Rhinos||4-1||Charlotte Eagles||1998 D-3 Pro||Chicago Stingers||3-2 OT||New Hampshire Phantoms||1998 PDSL||San Gabriel Valley Highlanders||3-2||Jackson Chargers|
|1999 A-League||Minnesota Thunder||2-1||Rochester Rhinos||1999 D-3 Pro||Western Mass Pioneers||2-1||South Jersey Barons||1999 PDL||Chicago Sockers||3-1||Spokane Shadow|
|2000 A-League||Rochester Rhinos||3-1||Minnesota Thunder||2000 D-3 Pro||Charlotte Eagles||5-0||New Jersey Stallions||2000 PDL||Chicago Sockers||1-0||Mid-Michigan Bucks|
|2001 A-League||Rochester Rhinos||2-0||Hershey Wildcats||2001 D-3 Pro||Utah Blitzz||1-0||Greenville Lions||2001 PDL||Westchester Flames||3-1||Calgary Storm|
|2002 A-League||Milwaukee Rampage||2-1 OT||Richmond Kickers||2002 D-3 Pro||Long Island Rough Riders||2-1||Wilmington Hammerheads||2002 PDL||Cape Cod Crusaders||2-1||Boulder Rapids Reserves|
|2003 A-League||Charleston Battery||3-0||Minnesota Thunder||2003 Pro Select||Wilmington Hammerheads||2-1 OT||Westchester Flames||2003 PDL||Cape Cod Crusaders||2-0||Chicago Fire Reserves|
|2004 A-League||Montreal Impact||2-0||Seattle Sounders||2004 Pro Select||Utah Blitzz||2-2 (5-4 PK)||Charlotte Eagles||2004 PDL||Central Florida Kraze||1-0||Boulder Rapids Reserves|
|2005 First Division||Seattle Sounders||1-1 (4-3 PK)||Richmond Kickers||2005 Second Division||Charlotte Eagles||2-2 (5-4 PK)||Western Mass Pioneers||2005 PDL||Des Moines Menace||0-0 (6-5 PK)||El Paso Patriots|
|2006 First Division||Vancouver Whitecaps||3-0||Rochester Raging Rhinos||2006 Second Division||Richmond Kickers||2-1||Charlotte Eagles||2006 PDL||Michigan Bucks||2-1||Laredo Heat|
|2007 First Division||Seattle Sounders||4-0||Atlanta Silverbacks||2007 Second Division||Harrisburg City Islanders||1-1 (8-7 PK)||Richmond Kickers||2007 PDL||Laredo Heat||0-0 (4-3 PK)||Michigan Bucks|
|2008 First Division||Vancouver Whitecaps||2-1||Puerto Rico Islanders||2008 Second Division||Cleveland City Stars||2-1||Charlotte Eagles||2008 PDL||Thunder Bay Chill||1-1 (4-1 PK)||Laredo Heat|
|2009 First Division||Montreal Impact||3-2; 3-1||Vancouver Whitecaps||2009 Second Division||Richmond Kickers||3-1||Charlotte Eagles||2009 PDL||Ventura County Fusion||2-1||Chicago Fire Premier|
|2010 D2 Pro League||Puerto Rico Islanders||2-0; 1-1||Carolina RailHawks||2010 Second Division||Charleston Battery||2-1||Richmond Kickers||2010 PDL||Portland Timbers U23's||4-1||Thunder Bay Chill|
|Professional Division (USL Pro)(Division III)||Premier Development League (USL PDL)(Semi-Pro)|
|Season||Winner||Final score||Runner-up||Season||Winner||Final score||Runner-up|
|2011 USL Pro||Orlando City||2-2 (3-2 PK)||Harrisburg City Islanders||2011 PDL||Kitsap Pumas||1-0||Laredo Heat|
|2012 USL Pro||Charleston Battery||1-0||Wilmington Hammerheads||2012 PDL||Forest City London||2-1||Carolina Dynamo|
|2013 USL Pro||Orlando City||7-4||Charlotte Eagles||2013 PDL||Austin Aztex||3-1||Thunder Bay Chill|
|USL Pro||Orlando City||2013|
|USL Premier Development League||Austin Aztex||2013|