| Home | Teams and Players | Homerun Kings | Top Salaries | Most Runs Batted In | Hall of Fame |
| Name | Kaiser Wilhelm |
| Given Name | Irvin Key |
| Birth Date | 1877-1-26 |
| Birth City | Wooster, OH |
| Height | 6'0" |
| Weight | 162 lbs. |
| Batting Hand | Right |
| Pitching Hand | Right |
| Alive | No |
| Age | 59 |
| Year | Team | Hits | At Bats | Home Runs | Runs Batted | Batting Average | Wins | Losses | # of Pitching Games | Strikeouts | # of Shutouts |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1903 | Pittsburgh Pirates | 3 | 34 | 0 | 0 | 0.088235 | 5 | 3 | 12 | 20 | 1 |
| 1904 | Boston Beaneaters | 7 | 100 | 0 | 3 | 0.07 | 14 | 20 | 39 | 73 | 3 |
| 1905 | Boston Beaneaters | 16 | 100 | 0 | 4 | 0.16 | 3 | 23 | 34 | 76 | 0 |
| 1908 | Brooklyn Superbas | 12 | 111 | 0 | 3 | 0.108108 | 16 | 22 | 42 | 99 | 6 |
| 1909 | Brooklyn Superbas | 13 | 57 | 0 | 4 | 0.22807 | 3 | 13 | 22 | 45 | 1 |
| 1910 | Brooklyn Superbas | 6 | 19 | 0 | 2 | 0.315789 | 3 | 7 | 15 | 17 | 0 |
| 1914 | Baltimore Terrapins | 21 | 84 | 0 | 8 | 0.25 | 12 | 17 | 47 | 113 | 1 |
| 1915 | Baltimore Terrapins | 0 | 0 | 0 | 0 | NAN | 0 | 0 | 1 | 0 | 0 |
| 1921 | Philadelphia Phillies | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 0 |
| Year | Position | Errors | Double Plays | Assists |
|---|---|---|---|---|
| 1903 | Outfielder | 0 | 0 | 2 |
| 1903 | Pitcher | 2 | 2 | 33 |
| 1904 | Pitcher | 7 | 3 | 90 |
| 1905 | Outfielder | 1 | 0 | 0 |
| 1905 | Pitcher | 5 | 2 | 77 |
| 1908 | Pitcher | 6 | 3 | 109 |
| 1909 | Pitcher | 6 | 0 | 56 |
| 1910 | Pitcher | 1 | 0 | 24 |
| 1914 | Pitcher | 4 | 1 | 82 |
| 1915 | Pitcher | 0 | 0 | 0 |
| 1921 | Pitcher | 0 | 0 | 1 |