8 team NL summary for 1891
| Team Name | Year | League | Games | Wins | Losses | W-L% | Park | Attendance |
|---|---|---|---|---|---|---|---|---|
| Boston Beaneaters | 1891 | NL | 140 | 87 | 51 | 0.630 | South End Grounds II | 184,472 |
| Chicago Colts | 1891 | NL | 137 | 82 | 53 | 0.607 | South Side Park I | 181,431 |
| New York Giants | 1891 | NL | 136 | 71 | 61 | 0.538 | Polo Grounds III | 210,568 |
| Philadelphia Phillies | 1891 | NL | 138 | 68 | 69 | 0.496 | Philadelphia Baseball Grounds | 217,282 |
| Cleveland Spiders | 1891 | NL | 141 | 65 | 74 | 0.468 | League Park I | 132,000 |
| Brooklyn Grooms | 1891 | NL | 137 | 61 | 76 | 0.445 | Eastern Park | 181,477 |
| Cincinnati Reds | 1891 | NL | 138 | 56 | 81 | 0.409 | League Park I in Cincinnati | 97,500 |
| Pittsburgh Pirates | 1891 | NL | 137 | 55 | 80 | 0.407 | Exposition Park | 128,000 |
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