Single Season Losses Leaders

  Rank Player Losses Year Age  
  1. John Coleman 48 1883 20  
  2. Will White 42 1880 25  
  3. Larry McKeon 41 1884 18  
  4. George Bradley 40 1879 26  
    Jim McCormick 40 1879 22  
  5. George Cobb 37 1892 26  
    Kid Carsey 37 1891 20  
    Henry Porter 37 1888 29  
  6. Bill Hutchison 36 1892 32  
    Stump Wiedman 36 1886 25  
  7. Red Donahue 35 1897 24  
    Hardie Henderson 35 1885 22  
    Fleury Sullivan 35 1884 22  
    Adonis Terry 35 1884 19  
    Pud Galvin* 35 1880 23  
    Jim Devlin 35 1876 26  
  8. Amos Rusie* 34 1890 19  
    Mark Baldwin 34 1889 25  
    Al Mays 34 1887 22  
    Matt Kilroy 34 1886 19  
    Bob Barr 34 1884 27  
    Bobby Mathews 34 1876 24  
  9. Jersey Bakely 33 1888 24  
    Dupee Shaw 33 1884 25  
    Hardie Henderson 33 1883 20  
    Frank Mountain 33 1883 23  
    Lee Richmond 33 1882 25  
    Jim Whitney 33 1881 23  
    Harry McCormick 33 1879 23  
  10. Jim Whitney 32 1886 28  
    Jim Whitney 32 1885 27  
    John Harkins 32 1884 25  
    Lee Richmond 32 1880 23  
  11. Amos Rusie* 31 1892 21  
    Billy Crowell 31 1887 21  
    Charley Radbourn* 31 1886 31  
    Dupee Shaw 31 1886 27  
    Will White 31 1879 24  
    Sam Weaver 31 1878 22  
  12. Jim Hughey 30 1899 30  
    Ted Breitenstein 30 1895 25  
    Ed Beatin 30 1890 23  
    John Ewing 30 1889 25  
    Toad Ramsey 30 1888 23  
    Phenomenal Smith 30 1887 22  
    Jack Lynch 30 1886 29  
    Jersey Bakely 30 1884 20  
    Jim McCormick 30 1882 25  
    Jim McCormick 30 1881 24  
    Mickey Welch* 30 1880 20  
  13. Vic Willis* 29 1905 29  
    Jack Taylor 29 1898 25  
    Bill Hart 29 1896 30  
    Silver King 29 1891 23  
    Red Ehret 29 1889 20  
    Bert Cunningham 29 1888 22  
    Hank O'Day 29 1888 25  
    John Healy 29 1887 20  
    Pud Galvin* 29 1883 26  
    Tommy Bond 29 1880 24  
  14. Bill Hill 28 1896 21  
    Duke Esper 28 1893 24  
    Mark Baldwin 28 1891 27  
    Gus Weyhing 28 1887 20  
    Al Mays 28 1886 21  
    Hugh Daily 28 1884 27  
    Hank O'Day 28 1884 21  
    Doc Landis 28 1882 27  
    Jim McCormick 28 1880 23  
  15. Paul Derringer 27 1933 26  
    George Bell 27 1910 35  
    Dummy Taylor 27 1901 26  
    Bill Carrick 27 1899 25  
    Willie Sudhoff 27 1898 23  
    Bill Hart 27 1897 31  
    Chick Fraser 27 1896 22  
    Pink Hawley 27 1894 21  
    Mark Baldwin 27 1892 28  
    Phil Knell 27 1891 26  
    Park Swartzel 27 1889 23  
    Toad Ramsey 27 1887 22  
    Toad Ramsey 27 1886 21  
    Tony Mullane 27 1886 27  
    Charlie Buffinton 27 1885 23  
    Tim Keefe* 27 1883 26  
    Tim Keefe* 27 1881 24  
    Pud Galvin* 27 1879 22  
  16. Bob Groom 26 1909 24  
    Gus Dorner 26 1906 29  
    Happy Townsend 26 1904 25  
    Pete Dowling 26 1901    
    Gus Weyhing 26 1898 31  
    Ted Breitenstein 26 1896 26  
    Frank Killen 26 1892 21  
    Tony Mullane 26 1891 32  
    George Haddock 26 1890 23  
    Harry Staley 26 1889 22  
    John Kirby 26 1886 21  
    Pud Galvin* 26 1885 28  
    Dupee Shaw 26 1885 26  

Active players in bold. (*)Hall of Fame Member.