9 team AA summary for 1891
| Team Name | Year | League | Games | Wins | Losses | W-L% | Park | Attendance |
|---|---|---|---|---|---|---|---|---|
| Boston Reds | 1891 | AA | 139 | 93 | 42 | 0.689 | Congress Street Grounds | 0 |
| St. Louis Browns | 1891 | AA | 141 | 85 | 51 | 0.625 | Sportsman's Park I | 0 |
| Philadelphia Athletics | 1891 | AA | 143 | 73 | 66 | 0.525 | Athletic Park | 0 |
| Baltimore Orioles | 1891 | AA | 139 | 71 | 64 | 0.526 | Union Park | 0 |
| Columbus Solons | 1891 | AA | 138 | 61 | 76 | 0.445 | Recreation Park II | 0 |
| Louisville Colonels | 1891 | AA | 141 | 54 | 83 | 0.394 | Eclipse Park I | 0 |
| Washington Statesmen | 1891 | AA | 139 | 44 | 91 | 0.326 | Boundary Field | 0 |
| Cincinnati Kelly's Killers | 1891 | AA | 102 | 43 | 57 | 0.430 | East End Park | 0 |
| Milwaukee Brewers | 1891 | AA | 36 | 21 | 15 | 0.583 | Athletic Field | 0 |
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