American soccer writing, history & data.
| Season | Name | Abbreviation | Champion | Champion (Tier 2) | Champion (Tier 3) |
|---|---|---|---|---|---|
| 1986-1987 | Southwest Indoor Soccer League | SISL | - | - | - |
| 1987-1988 | Southwest Indoor Soccer League | SISL | Oklahoma City Warriors | - | - |
| 1988-1989 | Southwest Indoor Soccer League | SISL | Lubbock Lazers | - | - |
| 1989-1990 | Southwest Independent Soccer League | SISL | - | - | - |
| 1990-1991 | Sunbelt Independent Soccer League | SISL | Colorado Comets | - | - |
| 1991-1992 | United States Interregional Soccer League | USISL | Oklahoma City Warriors | - | - |
| 1992-1993 | United States Interregional Soccer League | USISL | Atlanta Magic | - | - |
| 1993-1994 | United States Interregional Soccer League | USISL | Atlanta Magic | - | - |
| 1994-1995 | United States Indoor Soccer League | USISL-Indoor | Atlanta Magic | - | - |
| 1995-1996 | United States Indoor Soccer League | USISL-Indoor | Baltimore Bays | - | - |
| 1996-1997 | United Systems of Independent Soccer Leagues I-League | USISL I-League | Baltimore Bays | - | - |
| 1997-1998 | United Systems of Independent Soccer Leagues I-League | USISL I-League | Baltimore Bays | - | - |
| Organizing body | Dates |
|---|---|
| USISL United Systems of Independent Soccer Leagues | April 17, 1995 – Sept. 30, 1996 |
| USISL, Inc. | Oct. 1, 1996 – Sept. 30, 2009 |