Baseball Leading Season Wins Record Holders
| Rank | Player | Wins | Year |
| 1 | Old Hoss Radbourn | 60 | 1884 |
| 2 | John Clarkson | 53 | 1885 |
| 3 | Guy Hecker | 52 | 1884 |
| 4 | John Clarkson | 49 | 1889 |
| 5 | Charlie Buffinton | 48 | 1884 |
| 5 | Old Hoss Radbourn | 48 | 1883 |
| 7 | Al Spalding | 47 | 1876 |
| 7 | John Ward | 47 | 1879 |
| 9 | Pud Galvin | 46 | 1883 |
| 9 | Pud Galvin | 46 | 1884 |
| 9 | Matt Kilroy | 46 | 1887 |
| 12 | George Bradley | 45 | 1876 |
| 12 | Silver King | 45 | 1888 |
| 12 | Jim McCormick | 45 | 1880 |
| 15 | Bill Hutchison | 44 | 1891 |
| 15 | Mickey Welch | 44 | 1885 |
| 17 | Tommy Bond | 43 | 1879 |
| 17 | Larry Corcoran | 43 | 1880 |
| 17 | Billy Taylor | 43 | 1884 |
| 17 | Will White | 43 | 1879 |
| 17 | Will White | 43 | 1883 |
| 22 | Lady Baldwin | 42 | 1886 |
| 22 | Tim Keefe | 42 | 1886 |
| 24 | Jack Chesbro | 41 | 1904 |
| 24 | Dave Foutz | 41 | 1886 |
| 24 | Bill Hutchison | 41 | 1890 |
| 24 | Tim Keefe | 41 | 1883 |
| 24 | Ed Morris | 41 | 1886 |
| 24 | Charlie Sweeney | 41 | 1884 |
| 30 | Tommy Bond | 40 | 1877 |
| 30 | Tommy Bond | 40 | 1878 |
| 30 | Bob Caruthers | 40 | 1885 |
| 30 | Bob Caruthers | 40 | 1889 |
| 30 | Jim McCormick | 40 | 1884 |
| 30 | Bill Sweeney | 40 | 1884 |
| 30 | Ed Walsh | 40 | 1908 |
| 30 | Will White | 40 | 1882 |
| 38 | Ed Morris | 39 | 1885 |
| 38 | John Ward | 39 | 1880 |
| 38 | Mickey Welch | 39 | 1884 |
| 41 | John Clarkson | 38 | 1887 |
| 41 | Kid Gleason | 38 | 1890 |
| 41 | Toad Ramsey | 38 | 1886 |
| 44 | Pud Galvin | 37 | 1879 |
| 44 | Tim Keefe | 37 | 1884 |
| 44 | Jack Lynch | 37 | 1884 |
| 44 | Christy Mathewson | 37 | 1908 |
| 44 | Toad Ramsey | 37 | 1887 |
| 44 | Jim Whitney | 37 | 1883 |
| 50 | John Clarkson | 36 | 1886 |
| 50 | Bill Hutchison | 36 | 1892 |
| 50 | Walter Johnson | 36 | 1913 |
| 50 | Frank Killen | 36 | 1893 |
| 50 | Jim McCormick | 36 | 1882 |
| 50 | Sadie McMahon | 36 | 1890 |
| 50 | Tony Mullane | 36 | 1884 |
| 50 | Amos Rusie | 36 | 1894 |
| 50 | Cy Young | 36 | 1892 |
Updated: October 4, 2025
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