List of Seattle Mariners Opening Day starting pitchers Pitchers Pitchers

| Season | Pitcher | Decision | Opponent | Location_ |
|---|---|---|---|---|
| 1977 | Diego Seguí Category:Articles with hCards | L | California Angels | Kingdome |
| 1978 | Glenn Abbott Category:Articles with hCards | W | Minnesota Twins | Kingdome |
| 1979 | Glenn Abbott Category:Articles with hCards (2) | ND (W) | California Angels | Kingdome |
| 1980 | Mike Parrott Category:Articles with hCards | W | Toronto Blue Jays | Kingdome |
| 1981 | Glenn Abbott Category:Articles with hCards (3) | L | California Angels | Kingdome |
| 1982 | Floyd Bannister Category:Articles with hCards | W | Minnesota Twins | Hubert H. Humphrey Metrodome |
| 1983 | Gaylord Perry Category:Articles with hCards | ND (W) | New York Yankees | Kingdome |
| 1984 | Mike Moore Category:Articles with hCards | ND (W) | Toronto Blue Jays | Kingdome |