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The Seattle Mariners are an American professional baseball team based in Seattle. The Mariners compete in Major League Baseball (MLB) as a member club of the American League (AL) West Division. The team joined the American League as an expansion team in 1977 playing their home games in the Kingdome. Since July 1999, the Mariners' home ballpark has been T-Mobile Park, located in the SoDo neighborhood of Seattle.
The "Mariners" name originates from the prominence of marine culture in the city of Seattle. They are nicknamed the M's, a title featured in their primary logo from 1987 to 1992. They adopted their current team colors – navy blue, northwest green (teal), and silver – prior to the 1993 season, after having been royal blue and gold since the team's inception (the original colors continue to be used in alternate uniforms). Their mascot is the Mariner Moose.
The franchise did not field a winning team until 1991 and further success eluded them until the late-90s, which saw the most successful period in franchise history. Led by Hall of Fame players Edgar Martinez, Ken Griffey Jr., and Randy Johnson, the Mariners clinched their first playoff berth in 1995 when they won their first division championship and defeated the New York Yankees in the ALDS. Martinez's walk-off double in Game 5 drove Griffey in from first base to win the game in the 11th inning, clinched a series win for the Mariners, served as a powerful impetus to preserve baseball in Seattle, and has since become an iconic moment in team history. They would later win their second division title in 1997.
After Griffey, Johnson, and Alex Rodriguez all left the team, the Mariners, bolstered by the signing of Ichiro Suzuki, won 116 games in 2001, which set the American League record for most wins in a single season and tied the 1906 Chicago Cubs for the Major League record for most wins in a single season. The team would not make the postseason again until 2022, which was the longest active drought in the four major North American sports.
As of 2023, the franchise has finished with a losing record in 30 of 47 seasons. The Mariners are the only active MLB franchise never to have appeared in the World Series, and currently hold the longest active World Series appearance drought in MLB.
As of 2023, the Mariners' all-time win–loss record is 3,514–3,873–2 (.482).
The Mariners were created as a result of a lawsuit. In 1970, in the aftermath of the Seattle Pilots' purchase and relocation to Milwaukee as the Milwaukee Brewers by Bud Selig, the city of Seattle, King County, and the state of Washington (represented by then-state Attorney General and future U.S. Senator Slade Gorton) sued the American League for breach of contract. Confident that Major League Baseball would return to Seattle within a few years, King County built the multi-purpose Kingdome, which would become home to the National Football League's expansion Seattle Seahawks in 1976. The name "Mariners" was chosen by club officials in August 1976 from over 600 names submitted by 15,000 entrants in a name-the-team contest. The name was submitted by Roger Szmodis of Bellevue, Washington. However, when the Mariners attempted to reach Szmodis about the prize he had won as a result of his entry being chosen, they were unable to make contact with him, with all efforts to track the man down for years being unsuccessful.
The first home run in team history was hit on April 10, 1977, by designated hitter Juan Bernhardt.
That year, star pitcher Diego Seguí, in his last major league season, became the only player to play for both the Pilots and the Mariners. The Mariners finished with a 64–98 record, echoing the record the 1969 Pilots once held; however, the team was able to avoid last place in the AL West by half a game. In 1979, Seattle hosted the 50th Major League Baseball All-Star Game. After the 1981 season, the Mariners were sold to California businessman George Argyros, who in turn sold the team to Jeff Smulyan in 1989, and then to Nintendo of America in 1992.
During the 1992–93 offseason, the Mariners hired manager Lou Piniella, who had led the Cincinnati Reds to victory in the 1990 World Series. Mariner fans embraced Piniella, and he would helm the team from 1993 through 2002, winning two American League Manager of the Year Awards along the way. Piniella also had the distinction of being selected by the Seattle Pilots in the 1968 expansion draft and being on their roster from November 1968 to April 1969 when he was traded to the Kansas City Royals, where he earned rookie of the Year honors for 1969.
The 2001 Mariners club finished with a record of 116–46, leading all of Major League Baseball in winning percentage for the duration of the season and easily winning the American League West division championship. In doing so, the team broke the 1998 Yankees American League single-season record of 114 wins and matched the all-time MLB single-season record for wins set by the 1906 Chicago Cubs. At the end of the season, Ichiro Suzuki won the AL MVP, AL Rookie of the Year, and one of three outfield Gold Glove Awards, becoming the first player since the 1975 Boston Red Sox's Fred Lynn to win all three in the same season. The celebration wouldn't last, however, as the Mariners lost to the New York Yankees in the 2001 ALCS.
On October 22, 2008 the Mariners announced the hiring of Jack Zduriencik, formerly scouting director of the Milwaukee Brewers, as their general manager. Weeks later, on November 18, the team named Oakland Athletics bench coach Don Wakamatsu as its new field manager. Wakamatsu and Zduriencik hired an entirely new coaching staff for 2009, which included former World Series MVP John Wetteland as bullpen coach. The off-season also saw a litany of roster moves, headlined by a 12-player, 3-team trade that included sending All-Star closer J. J. Putz to the New York Mets and brought 5 players—including prospect Mike Carp and outfielder Endy Chávez from New York and outfielder Franklin Gutiérrez from the Cleveland Indians—to Seattle. Many of the moves, like the free-agent signing of Mike Sweeney, were made in part with the hope of squelching the clubhouse infighting that plagued the Mariners in 2008. It also saw the return of Seattle favorite Griffey Jr. The 2009–10 offseason was highlighted by the trade for 2008 American League Cy Young Award winner Cliff Lee from the Philadelphia Phillies, the signing of third baseman Chone Figgins and the contract extension of star pitcher "King" Félix Hernández.
Griffey Jr. announced his retirement on June 2, 2010, after 22 MLB seasons.
The Mariners fired field manager Don Wakamatsu along with bench coach Ty Van Burkleo, pitching coach Rick Adair and performance coach Steve Hecht on August 9, 2010. Daren Brown, the manager of the AAA affiliate Tacoma Rainiers, took over as interim field manager. Roger Hansen, the former Minor League catching coordinator, was promoted to bench coach. Carl Willis, the former Minor League pitching coordinator, was promoted to pitching coach.
The Mariners hired former Cleveland Indians manager Eric Wedge as their new manager on October 19, 2010.
Dave Niehaus, the Mariners' play-by-play announcer since the team's inception, died of a heart attack on November 10, 2010, at the age of 75. In memory of Niehaus, Seattle rapper Macklemore wrote a tribute song called "My Oh My" in December 2010. He performed the song at the Mariners' Opening Day game on April 8, 2011.
On April 21, 2012, Philip Humber of the Chicago White Sox threw the third perfect game in Chicago White Sox history against the Mariners at Safeco Field in Seattle. It was the 21st perfect game in MLB history. Mariners starting pitcher Kevin Millwood and five other pitchers combined to throw the tenth combined no-hitter in MLB history and the first in team history on June 8, 2012. The last combined one occurred in 2003, when six Houston Astros no-hit the New York Yankees in New York. The six pitchers used in a no-hitter is a major league record. Félix Hernández pitched the first perfect game in team history, shutting down the Tampa Bay Rays 1–0 at Safeco Field on August 15, 2012. It was the 23rd perfect game in Major League Baseball history. The Mariners became the first team in Major League Baseball to be involved in two perfect games in one season.
General manager Jack Zduriencik was relieved of his position by the team on August 28, 2015. Jerry Dipoto, who formerly served as general manager of the Los Angeles Angels of Anaheim, was hired as the new general manager of the Mariners one month later. On October 9, 2015, manager Lloyd McClendon was fired, and the search for a new manager was begun. Scott Servais was named the new Mariners' manager on October 23, 2015.
Nintendo of America issued a press release on April 27, 2016, stating it would sell most shares it held of Seattle Mariners ownership to First Avenue Entertainment limited partnership. Nintendo retained a 10% ownership share of the team after the sale was completed in August 2016.
The Stanton/Dipoto/Servais era has been characterized by two phases. In the first phase, the organization tried to contend for a championship by building around the then-present core of Robinson Cano, Felix Hernandez, Nelson Cruz, and Kyle Seager. The team came close but ultimately missed the playoffs each year from 2016 to 2018. Following the 2018 season, the organization pivoted to a rebuild, trading off their most valuable players in return for prospects. Following a fallow period of 2019–20, the team returned to contention in 2021, winning 90 games but falling short of the playoffs. In 2022, with a new core of Julio Rodriguez, J. P. Crawford, Cal Raleigh, Luis Castillo, George Kirby, and Logan Gilbert, the team reached the postseason for the first time since 2001. This broke what was at the time the longest playoff drought of any team in the big 4 North American sports. Rodriguez also won the American League Rookie of the Year Award. In 2023, the team won 88 games but finished one game out of a playoff spot.