Post-season
| Game | Score | Date | Location | Attendance |
|---|---|---|---|---|
| 1 | Pittsburgh Pirates – 7, Boston Americans – 3 | October 1 | Huntington Avenue Baseball Grounds | 16,242 |
| 2 | Pittsburgh Pirates – 0, Boston Americans – 3 | October 2 | Huntington Avenue Baseball Grounds | 9,415 |
| 3 | Pittsburgh Pirates – 4, Boston Americans – 2 | October 3 | Huntington Avenue Baseball Grounds | 18,801 |
| 4 | Boston Americans – 4, Pittsburgh Pirates – 5 | October 6 | Exposition Park III | 7,600 |
| 5 | Boston Americans – 11, Pittsburgh Pirates – 2 | October 7 | Exposition Park III | 12,322 |
| 6 | Boston Americans – 6, Pittsburgh Pirates – 3 | October 8 | Exposition Park III | 11,556 |
| 7 | Boston Americans – 7, Pittsburgh Pirates – 3 | October 10 | Exposition Park III | 17,038 |
| 8 | Pittsburgh Pirates – 0, Boston Americans – 3 | October 13 | Huntington Avenue Baseball Grounds | 7,455 |
Read more about this topic: 1903 Major League Baseball Season