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Given Name: Leon Kessling
Birth Date: 1882-8-2
Birth Place: Warren, USA
Age: 54
Height: 70 inches
Weight: 185 lbs
Bats: Left
Throws: Right

| Year | Team | Hits | At Bats | Home Runs | Runs Batted In | Batting Average |
|---|---|---|---|---|---|---|
| 1903 | New York Giants | 0 | 6 | 0 | 1 | 0.000 |
| 1904 | New York Giants | 5 | 40 | 0 | 3 | 0.125 |
| 1905 | New York Giants | 14 | 97 | 0 | 7 | 0.144 |
| 1906 | New York Giants | 4 | 61 | 0 | 0 | 0.066 |
| 1907 | New York Giants | 12 | 69 | 1 | 5 | 0.174 |
| 1908 | New York Giants | 7 | 36 | 0 | 2 | 0.194 |
| 1909 | New York Giants | 6 | 81 | 0 | 6 | 0.074 |
| 1910 | New York Giants | 11 | 62 | 1 | 6 | 0.177 |
| 1911 | New York Giants | 6 | 64 | 0 | 5 | 0.094 |
| 1912 | New York Giants | 13 | 58 | 0 | 3 | 0.224 |
| 1913 | Cincinnati Reds | 6 | 59 | 0 | 2 | 0.102 |
| 1913 | New York Giants | 2 | 13 | 0 | 1 | 0.154 |
| 1914 | Cincinnati Reds | 12 | 94 | 1 | 6 | 0.128 |
| 1915 | Cincinnati Reds | 1 | 20 | 0 | 0 | 0.050 |
| 1915 | St. Louis Cardinals | 4 | 35 | 0 | 2 | 0.114 |
| 1916 | St. Louis Cardinals | 12 | 68 | 0 | 1 | 0.176 |
| 1917 | St. Louis Cardinals | 12 | 64 | 0 | 7 | 0.188 |
| 1918 | St. Louis Cardinals | 10 | 64 | 0 | 4 | 0.156 |
| 1919 | Philadelphia Phillies | 2 | 5 | 0 | 1 | 0.400 |
| 1919 | St. Louis Cardinals | 4 | 18 | 0 | 1 | 0.222 |
| Year | Team | Wins | Losses | Games | Strikeouts | Shutouts |
|---|---|---|---|---|---|---|
| 1903 | New York Giants | 2 | 0 | 2 | 14 | 1 |
| 1904 | New York Giants | 4 | 6 | 16 | 93 | 1 |
| 1905 | New York Giants | 22 | 8 | 34 | 198 | 2 |
| 1906 | New York Giants | 12 | 10 | 31 | 156 | 1 |
| 1907 | New York Giants | 10 | 12 | 39 | 146 | 2 |
| 1908 | New York Giants | 7 | 4 | 18 | 81 | 0 |
| 1909 | New York Giants | 15 | 10 | 34 | 156 | 2 |
| 1910 | New York Giants | 12 | 11 | 33 | 94 | 3 |
| 1911 | New York Giants | 11 | 10 | 34 | 118 | 1 |
| 1912 | New York Giants | 11 | 5 | 33 | 83 | 2 |
| 1913 | Cincinnati Reds | 11 | 13 | 31 | 80 | 1 |
| 1913 | New York Giants | 2 | 1 | 8 | 30 | 0 |
| 1914 | Cincinnati Reds | 15 | 23 | 47 | 128 | 3 |
| 1915 | Cincinnati Reds | 2 | 4 | 17 | 26 | 1 |
| 1915 | St. Louis Cardinals | 9 | 3 | 15 | 48 | 2 |
| 1916 | St. Louis Cardinals | 11 | 16 | 45 | 98 | 2 |
| 1917 | St. Louis Cardinals | 15 | 10 | 43 | 62 | 2 |
| 1918 | St. Louis Cardinals | 9 | 14 | 27 | 68 | 0 |
| 1919 | Philadelphia Phillies | 0 | 2 | 3 | 4 | 0 |
| 1919 | St. Louis Cardinals | 3 | 5 | 23 | 19 | 0 |
| Year | Team | Errors | Double Plays | Assists |
|---|---|---|---|---|
| 1903 | New York Giants | 0 | 0 | 0 |
| 1904 | New York Giants | 4 | 1 | 26 |
| 1905 | New York Giants | 5 | 1 | 69 |
| 1906 | New York Giants | 5 | 0 | 66 |
| 1907 | New York Giants | 8 | 0 | 76 |
| 1908 | New York Giants | 3 | 4 | 32 |
| 1909 | New York Giants | 9 | 1 | 99 |
| 1910 | New York Giants | 8 | 4 | 68 |
| 1911 | New York Giants | 7 | 0 | 69 |
| 1912 | New York Giants | 1 | 3 | 53 |
| 1913 | Cincinnati Reds | 1 | 0 | 49 |
| 1913 | New York Giants | 0 | 2 | 18 |
| 1914 | Cincinnati Reds | 9 | 3 | 99 |
| 1915 | Cincinnati Reds | 1 | 0 | 22 |
| 1915 | St. Louis Cardinals | 1 | 1 | 39 |
| 1916 | St. Louis Cardinals | 6 | 0 | 56 |
| 1917 | St. Louis Cardinals | 2 | 4 | 83 |
| 1918 | St. Louis Cardinals | 3 | 1 | 57 |
| 1919 | Philadelphia Phillies | 0 | 0 | 7 |
| 1919 | St. Louis Cardinals | 1 | 0 | 12 |