1998 Seattle Mariners season Game log June

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| June 10 | @ San Francisco Giants | 4-1 | Hershiser (6-4) | 23590 | 28-37 |
| June 11 | @ Oakland Athletics | 2-5 | Fassero (5-3) | 7838 | 28-38 |
| June 12 | @ Oakland Athletics | 5-0 | Candiotti (4-8) | 11533 | 29-38 |
| June 13 | @ Oakland Athletics | 3-7 | Johnson (5-6) | 21444 | 29-39 |
| June 14 | @ Oakland Athletics | 3-4 | Slocumb (1-4) | 21503 | 29-40 |
| June 16 | @ Anaheim Angels | 2-3 | Swift (6-4) | 23123 | 29-41 |
| June 17 | @ Anaheim Angels | 2-4 | Fassero (5-4) | 24800 | 29-42 |
| June 18 | @ Anaheim Angels | 5-11 | Spoljaric (3-1) | 30268 | 29-43 |
| June 19 | Oakland Athletics | 9-1 | Stein (3-4) | 33212 | 30-43 |
| June 20 | Oakland Athletics | 2-6 | Cloude (3-6) | 44597 | 30-44 |
| June 21 | Oakland Athletics | 10-5 | Oquist (4-4) | 37665 | 31-44 |