The professional top-tier league classified as Division I in the United States. This record covers only the historical ASL I from 1921–22 through 1932–33; the brief Atlantic Coast League phase in 1929–30 remains a separate title line under its own name. Later leagues with the same name do not continue it.
| Season | American Soccer League champion | Runner-up | Trophy |
|---|---|---|---|
| 1932/33 | Fall River Football Club | - | — |
| 1932 | New Bedford Whalers | - The surviving detailed records are contradictory; no final opponent is asserted. | — |
| 1931 | New York Giants | New Bedford Whalers Two-match championship series | — |
| 1930 | Fall River Marksmen | - | — |
| 1929 | Fall River Marksmen | - | — |
| 1928/29 | Fall River Marksmen | - | — |
| 1927/28 | Boston Soccer Club | New Bedford Whalers Final: 4–2 | — |
| 1926/27 | Bethlehem Steel FC | - | — |
| 1925/26 | Fall River Marksmen | - | — |
| 1924/25 | Fall River Marksmen | - | — |
| 1923/24 | Fall River Marksmen | - | — |
| 1922/23 | J. & P. Coats | - | — |
| 1921/22 | Philadelphia Football Club | - | — |