# List of Seattle Mariners Opening Day starting pitchers

The Seattle Mariners are a Major League Baseball (MLB) franchise based in Seattle, Washington. They play in the American League West division. The first game of the new baseball season for a team is played on Opening Day, and being named the Opening Day starter is an honor, which is often given to the player who is expected to lead the pitching staff that season, though there are various strategic reasons why a team's best pitcher might not start on Opening Day. The Mariners have used 15 different Opening Day starting pitchers in their 41 seasons. The 15 starters have a combined Opening Day record of 15 wins, 13 losses (15–13) and 13 no decisions. No decisions are only awarded to the starting pitcher if the game is won or lost after the starting pitcher has left the game.
Félix Hernández has the Mariners' record for most Opening Day starts with eleven, recording a record of 7–2. Randy Johnson has the most starts in the former home ballpark of the Mariners, the Kingdome, compiling an Opening Day record of 2–0 in 6 starts. Jamie Moyer has the most starts in Safeco Field, the Mariners' current home ballpark, and has an Opening Day record of 1–2. Mark Langston has the worst winning percentage as the Opening Day starting pitcher with a record of 0–3, all of which were pitched on the road.
Overall, the Mariners' starters have a record of 7–4 at the Kingdome on Opening Day, compared to a 4–3 record at Safeco Field, making their combined home record 11–7, and their away record 6–6. The Mariners went on to play in the American League Division Series (ALDS) playoff games in 1995, 1997, 2000, and 2001. Randy Johnson, Jeff Fassero, Jamie Moyer, and Freddy García were the Opening Day starting pitchers those years, and had a combined Opening Day record of 2–1.

## Key

| Season | Each year is linked to an article about that particular Mariners season. |
| W | Win |
| L | Loss |
| ND (W) | No decision by starting pitcher; Mariners won game |
| ND (L) | No decision by starting pitcher; Mariners lost game |
| Pitcher (#) | Number of appearances as Opening Day starter with the Mariners |
| * | Advanced to the postseason |

## Pitchers

| Season | Pitcher | Decision | Opponent | Location |
| 1977 | Diego Seguí | L | California Angels | Kingdome |
| 1978 | Glenn Abbott | W | Minnesota Twins | Kingdome |
| 1979 | Glenn Abbott (2) | ND (W) | California Angels | Kingdome |
| 1980 | Mike Parrott | W | Toronto Blue Jays | Kingdome |
| 1981 | Glenn Abbott (3) | L | California Angels | Kingdome |
| 1982 | Floyd Bannister | W | Minnesota Twins | Hubert H. Humphrey Metrodome |
| 1983 | Gaylord Perry | ND (W) | New York Yankees | Kingdome |
| 1984 | Mike Moore | ND (W) | Toronto Blue Jays | Kingdome |
| 1985 | Mike Moore (2) | W | Oakland Athletics | Kingdome |
| 1986 | Mike Moore (3) | ND (W) | California Angels | Kingdome |
| 1987 | Mark Langston | L | California Angels | Anaheim Stadium |
| 1988 | Mark Langston (2) | L | Oakland Athletics | Network Associates Coliseum |
| 1989 | Mark Langston (3) | L | Oakland Athletics | Network Associates Coliseum |
| 1990 | Brian Holman | W | California Angels | Kingdome |
| 1991 | Erik Hanson | L | California Angels | Kingdome |
| 1992 | Randy Johnson | ND (L) | Texas Rangers | Kingdome |
| 1993 | Randy Johnson (2) | W | Toronto Blue Jays | Kingdome |
| 1994 | Randy Johnson (3) | ND (L) | Cleveland Indians | Jacobs Field |
| 1995* | Randy Johnson (4) | W | Detroit Tigers | Kingdome |
| 1996 | Randy Johnson (5) | ND (W) | Chicago White Sox | Kingdome |
| 1997* | Jeff Fassero | W | New York Yankees | Kingdome |
| 1998 | Randy Johnson (6) | ND (L) | Cleveland Indians | Kingdome |
| 1999 | Jeff Fassero (2) | L | Chicago White Sox | Kingdome |
| 2000* | Jamie Moyer | L | Boston Red Sox | Safeco Field |
| 2001* | Freddy García | ND (W) | Oakland Athletics | Safeco Field |
| 2002 | Freddy García (2) | L | Chicago White Sox | Safeco Field |
| 2003 | Freddy García (3) | L | Oakland Athletics | Network Associates Coliseum |
| 2004 | Jamie Moyer (2) | L | Anaheim Angels | Safeco Field |
| 2005 | Jamie Moyer (3) | W | Minnesota Twins | Safeco Field |
| 2006 | Jamie Moyer (4) | ND (L) | Los Angeles Angels of Anaheim | Safeco Field |
| 2007 | Félix Hernández | W | Oakland Athletics | Safeco Field |
| 2008 | Érik Bédard | ND (W) | Texas Rangers | Safeco Field |
| 2009 | Félix Hernández (2) | W | Minnesota Twins | Hubert H. Humphrey Metrodome |
| 2010 | Félix Hernández (3) | ND (W) | Oakland Athletics | Oakland–Alameda County Coliseum |
| 2011 | Félix Hernández (4) | W | Oakland Athletics | Oakland–Alameda County Coliseum |
| 2012 | Félix Hernández (5) | ND (W) | Oakland Athletics | Tokyo Dome |
| 2013 | Félix Hernández (6) | W | Oakland Athletics | Oakland–Alameda County Coliseum |
| 2014 | Félix Hernández (7) | W | Los Angeles Angels of Anaheim | Angel Stadium of Anaheim |
| 2015 | Félix Hernández (8) | W | Los Angeles Angels of Anaheim | Safeco Field |
| 2016 | Félix Hernández (9) | L | Texas Rangers | Globe Life Park in Arlington |
| 2017 | Félix Hernández (10) | L | Houston Astros | Minute Maid Park |
| 2018 | Félix Hernández (11) | W | Cleveland Indians | Safeco Field |
| 2019 | Marco Gonzales | W | Oakland Athletics | Tokyo Dome |
| 2020 | Marco Gonzales (2) | L | Houston Astros | Minute Maid Park |
| 2021 | Marco Gonzales (3) | ND (W) | San Francisco Giants | T-Mobile Park |
| 2022* | Robbie Ray | W | Minnesota Twins | Target Field |
| 2023 | Luis Castillo | ND (W) | Cleveland Guardians | T-Mobile Park |
| 2024 | Luis Castillo (2) | L | Boston Red Sox | T-Mobile Park |
| 2025 | Logan Gilbert | | Athletics | T-Mobile Park |

## Records by Pitcher

Pitchers with 2+ starts :
| Pitcher | Num Starts | Player W-L (ND) | Team W-L |
| Felix Hernandez | 11 | 7-2 (2) | 9–2 |
| Randy Johnson | 6 | 2-0 (4) | 3-3 |
| Jamie Moyer | 4 | 1-2 (1) | 1–3 |
| Mike Moore | 3 | 1-0 (2) | 3-0 |
| Glenn Abbott | 3 | 1-1 (1) | 2-1 |
| Marco Gonzales | 3 | 1-1 (1) | 2-1 |
| Freddy Garcia | 3 | 0-2 (1) | 1-2 |
| Mark Langston | 3 | 0-3 | 0-3 |
| Jeff Fassero | 2 | 1-1 | 1-1 |
| Luis Castillo | 2 | 0-1 (1) | 1-1 |