1998 Seattle Mariners season Game log June

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| June 22 | San Diego Padres | 3-5 | Fassero (5-5) | 41571 | 31-45 |
| June 23 | San Diego Padres | 5-3 | Hamilton (5-8) | 30961 | 32-45 |
| June 24 | @ San Diego Padres | 2-1 | Ashby (10-5) | 36900 | 33-45 |
| June 25 | @ San Diego Padres | 0-6 | Cloude (3-7) | 32626 | 33-46 |
| June 26 | @ Arizona Diamondbacks | 8-13 | Spoljaric (3-2) | 49328 | 33-47 |
| June 27 | @ Arizona Diamondbacks | 6-4 | Benes (6-8) | 48488 | 34-47 |
| June 28 | @ Arizona Diamondbacks | 2-3 | Ayala (0-6) | 47968 | 34-48 |
| June 30 | Colorado Rockies | 4-6 | Johnson (7-7) | 28821 | 34-49 |