1989 Oakland Athletics season Game log May

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| May 16 | Yankees | 3–2 | C. Young (1–4) | 25852 | 25–13 |
| May 17 | Yankees | 8–3 | Dotson (1–1) | 24505 | 26–13 |
| May 18 | Yankees | 6–2 | John (2–7) | 40758 | 27–13 |
| May 19 | Red Sox | 7 – 4 (10) | Nelson (1–1) | 40382 | 27–14 |
| May 20 | Red Sox | 6–3 | Gardner (1–4) | 43427 | 28–14 |
| May 21 | Red Sox | 5–4 | Clemens (5–3) | 44505 | 29–14 |
| May 23 | @ Brewers | 9–1 | Welch (6–3) | 13882 | 29–15 |
| May 24 | @ Brewers | 6–2 | Birkbeck (0–3) | 13932 | 30–15 |
| May 25 | @ Brewers | 4–1 | Stewart (8–2) | 18898 | 30–16 |
| May 26 | @ Yankees | 4–0 | Hawkins (4–6) | 28726 | 31–16 |
| May 27 | @ Yankees | 3–0 | LaPoint (5–3) | 28111 | 32–16 |
| May 28 | @ Yankees | 4–3 | Parker (2–1) | 38527 | 33–16 |