American soccer writing, history & data.
| Season | Name | Abbreviation | Champion | Champion (Tier 2) | Champion (Tier 3) |
|---|---|---|---|---|---|
| 1998 | Premier Soccer Alliance | PSA | Dallas Sidekicks | - | - |
| 1999 | World Indoor Soccer League | WISL | Sacramento Knights | - | - |
| 2000 | World Indoor Soccer League | WISL | Monterrey La Raza | - | - |
| 2001 | World Indoor Soccer League | WISL | Dallas Sidekicks | - | - |