2004 Boston Red Sox season Game log April

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| April 4 | @ Orioles | 7 - 2 | Martínez (0-1) | 47683 | 0-1 |
| April 6 | @ Orioles | 4 - 1 | DuBose (0-1) | 35355 | 1-1 |
| April 7 | @ Orioles | 10 - 3 | Ainsworth (0-1) | 28373 | 2-1 |
| April 8 | @ Orioles | 3 - 2 (13) | Jones | 31121 | 2-2 |
| April 9 | Blue Jays | 10 - 5 | Timlin (0-1) | 34337 | 2-3 |
| April 10 | Blue Jays | 4 - 1 | Halladay (0-2) | 35305 | 3-3 |
| April 11 | Blue Jays | 6 - 4 (12) | López (0-1) | 34286 | 4-3 |