Clubes · 1901
5 clubes
| Club | Liga | Sede | Estadio |
|---|---|---|---|
| Boston Red Sox | Grandes Ligas de Béisbol | Boston | Huntington Avenue Grounds, Fenway Park |
| Club Cienciano | Primera División del Perú | — | Estadio Inca Garcilaso de la Vega |
| Minnesota Twins | Grandes Ligas de Béisbol | — | Target Field, American League Park, Metropolitan Stadium, Hubert H. Humphrey Metrodome, Boundary Field, Griffith Stadium |
| Philadelphia Athletics | — | — | — |
| Washington Senators | Liga Americana | — | Griffith Stadium |