2003 Boston Red Sox season Game log July

| Date_ | Opponent | Score | Loss | Save_ |
|---|---|---|---|---|
| July 11 | @ Tigers | 5–3 | Maroth (4–13) | Kim (4) |
| July 12 | @ Tigers | 4–2 11 | Rodney (0–1) | Kim (5) |
| July 13 | @ Tigers | 3–0 | Wakefield (6–4) | Mears (4) |
| July 17 | Blue Jays | 5–2 | Lowe (10–4) | ||34,521||55–39 |
| July 18 | Blue Jays | 4–1 | Wakefield (6–5) | Miller (1) |
| July 19 | Blue Jays | 5–4 10 | López (1–3) | ||34,812||56–40 |
| July 20 | Blue Jays | 9–4 | Wasdin (0–1) | ||34,321||57–40 |
| July 21 | Tigers | 14–5 | Bonderman (3–14) | Fossum (1) |
| July 22 | Tigers | 7–4 | Maroth (5–14) | ||33,570||59–40 |
| July 23 | Devil Rays | 10–4 | Harper (1–6) | ||33,446||60–40 |
| July 24 | Devil Rays | 15–9 | Mendoza (3–4) | ||33,521||60–41 |
| July 25 | Yankees | 4–3 | Kim (4–8) | ||34,873||60–42 |
| July 26 | Yankees | 5–4 | Benítez (3–4) | ||34,356||61–42 |