| Position | Pitcher |
|---|---|
| Bats | Right |
| Throws | Right |
| Birth date | October 24, 1887 |
| Birth place | Chicago, Illinois, U.S. |
| Death date | August 28, 1958 (aged 70) |
| Death place | Chicago, Illinois, U.S. |
| Debutleague | MLB |
| Debutdate | June 7 |
| Debutyear | 1910 |
| Debutteam | Philadelphia Phillies |
| Finalleague | MLB |
| Finaldate | August 3 |
| Finalyear | 1914 |
| Finalteam | Chicago Cubs |
| Statleague | MLB |
| Stat1label | Win–loss record |
| Stat1value | 26–24 |
| Stat2label | Earned run average |
| Stat2value | 3.52 |
| Stat3label | Strikeouts |
| Stat3value | 200 |
| Teams |
William Edward Stack (October 24, 1887 – August 28, 1958) was an American pitcher in Major League Baseball from 1910 to 1914.