1998 Seattle Mariners season Game log August

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| August 23 | Chicago White Sox | 3-2 | Snyder (4-2) | 35159 | 59-69 |
| August 24 | Chicago White Sox | 11-10 | Sirotka (12-12) | 27087 | 60-69 |
| August 25 | @ Cleveland Indians | 4-10 | Swift (10-8) | 43113 | 60-70 |
| August 26 | @ Cleveland Indians | 3-5 | Fassero (10-10) | 43091 | 60-71 |
| August 27 | @ Cleveland Indians | 10-4 | Wright (11-8) | 43142 | 61-71 |
| August 28 | @ New York Yankees | 3-10 | Spoljaric (4-3) | 49789 | 61-72 |
| August 29 | @ New York Yankees | 6-11 | Cloude (8-10) | 55146 | 61-73 |
| August 30 | @ New York Yankees | 13-3 | Irabu (11-7) | 55341 | 62-73 |
| August 31 | @ Boston Red Sox | 1-5 | Fassero (10-11) | 28553 | 62-74 |