The History of the Seattle Mariners: Every Era, from the First Season to Today
The Seattle Mariners from 1977 to 2025: the Kingdome years, Griffey, Johnson and the 1995 rescue, the 116-win team of 2001, a 21-year playoff drought, and the 2025 division title.
The Seattle Mariners joined the American League in 1977, and through the 2025 season they are the one big-league club that has never played in a World Series. The historical record lists 49 seasons for the franchise, 3,689 wins against 4,022 losses (a .478 winning percentage), no pennants and four division titles. It is a thin trophy case for nearly half a century of baseball, and it sits beside one of the best collections of individual talent any franchise has produced: Ken Griffey, Randy Johnson, Edgar Martinez, Ichiro Suzuki and Felix Hernandez all spent many of their best years in Seattle.
The history is easiest to read as a series of arguments between those players and the circumstances around them. A losing expansion team in a concrete dome. A small-market club that nearly left town. A burst of excellence in the mid-1990s that saved the franchise and paid for a new ballpark. A 116-win season that ended in the league championship series. A drought of 21 seasons without a playoff game. A division title in 2025 and a seven-game league championship series that fell one run short of the pennant.
This article walks through those eras with the numbers from the historical record. For the best individual players at each position, see the best players in Seattle Mariners history, and for the postseason series one at a time, see the best Mariners seasons and every October run. Live scores and the schedule are on the Mariners team page.
Seattle before the Mariners, and an expansion team in 1977
Seattle had a major-league team once before. The Seattle Pilots played the 1969 season in the American League and then moved to Milwaukee, where they became the Brewers. Washington State sued the league over the move and local officials lobbied for a replacement, and the American League awarded Seattle an expansion franchise that began play in 1977, along with the Toronto Blue Jays. The new club took the name Mariners.
The Mariners played in the Kingdome, an enclosed concrete stadium that was built for football and shared with the NFL's Seahawks. Baseball in the Kingdome had a particular feel: no weather delays, an artificial surface and a roof that held the noise in. The historical record lists the Kingdome as the club's park from 1977 through 1998, with a best season attendance of 3,192,237, a number that tells you how the crowds grew once the team became good.
Those first teams were not good. The Mariners lost 104 games in 1978 (56-104, seventh in the American League West), 103 in 1980 (59-103) and 102 in 1983 (60-102). Darrell Johnson managed the first 589 games, 1977 to 1980, and won 226 of them. Other managers came and went: Rene Lachemann, Chuck Cottier, Dick Williams, Jim Lefebvre. The best players of the era were useful rather than famous. Julio Cruz stole 290 bases for the club between 1977 and 1983, and Floyd Bannister and Mark Langston gave the rotation a lefthanded anchor, Langston striking out 1,078 batters for the Mariners across the late 1980s.
The first Seattle player to win a major award was Alvin Davis, the 1984 Rookie of the Year. Davis hit 160 home runs for the club between 1984 and 1991 and walked 672 times, and the Mariners' fans nicknamed him "Mr. Mariner." His career, like the franchise's first decade, is a reminder that a patient hitter on a bad team gets little attention.
Griffey, Johnson, Martinez and the arrival of a contender, 1987 to 1994
The trio that would change the franchise arrived within a few years of each other. Edgar Martinez, a third baseman who debuted in 1987, took a few seasons to win a regular job and then became one of the best pure hitters of his generation. Ken Griffey, drafted first overall in 1987, reached the major leagues in 1989 at 19. Randy Johnson, a 6-foot-10 lefthander acquired in a 1989 trade that sent Langston to Montreal, joined Seattle that same year. Johnson was famously wild, and the historical record shows how long he needed to harness it: in 1990 he went 14-11 with a 3.65 ERA, in 1991 13-10 with a 3.98 ERA, and in 1992 12-14 with 241 strikeouts and a 3.77 ERA.
Griffey, meanwhile, was a star at once. He hit .300 in 1990, .327 in 1991, and in 1993 he hit 45 home runs with a .309 average. His blend of power, speed and defense in center field made him the face of baseball in the early 1990s, and his smile and his backwards cap gave the sport a younger audience than it had had in years. He finished with 417 home runs as a Mariner, the club record, and 1,843 hits.
Ownership mattered as much as talent. The Mariners were in financial trouble in the early 1990s, and by 1992 there was serious discussion of selling the club to out-of-town buyers. An ownership group financed largely by Nintendo's Hiroshi Yamauchi bought the team in 1992 and kept it in Seattle. Lou Piniella, who took over as manager in 1993, would go on to manage 1,547 games for the club (836-711), the most by any Mariners skipper. His teams were competitive in 1993, finishing 82-80, but the supporting cast was still thin.
In 1994, a strike ended the season in August, and the Kingdome made unwelcome news that summer when ceiling tiles fell in July and forced the club onto the road. Both events delayed what was coming.
The 1995 season and "Refuse to Lose"
In 1995, the Mariners trailed the California Angels by a wide margin in the late summer. They then went on a run that closed the gap and tied the Angels at the end of the regular season, and then beat them in a one-game playoff to win the American League West, the first division title in club history. Randy Johnson, who went 18-2 with a 2.48 ERA and 294 strikeouts, was the Cy Young winner. Martinez hit .356 with 29 home runs and 113 RBI.
The division series against the Yankees went the full five games and was decided in the 11th inning of the fifth game, when Martinez doubled to bring home Joey Cora and Griffey, who slid across the plate with the winning run. The Mariners had come back from a two-games-to-none deficit, and the image of Griffey at the bottom of a pile of teammates became the defining photograph of the franchise. They lost the American League Championship Series to Cleveland, 2-4, but the 1995 run was widely credited with building public support for a new ballpark, at a time when the franchise's future in Seattle was uncertain.
Griffey missed much of the 1995 season (72 games, 17 home runs) after breaking his wrist crashing into the wall. Two years later, he would take the next step. In 1996 he hit 49 home runs, in 1997 he hit 56 with 147 RBI and won the American League's Most Valuable Player award. In 1998 he hit 56 again and in 1999 he hit 48. The Mariners won the AL West in 1997 with a 90-72 record, but lost the division series to Baltimore, 1-3.
Safeco Field and the departures, 1998 to 2000
The new ballpark opened in the middle of the 1999 season. The historical record lists the 1999 park as "Kingdome / Safeco Field" because the club played in both that year, and the 2000 season was the first complete one at Safeco Field, which would become T-Mobile Park in 2019. It has a retractable roof that slides over the field in bad weather while the park stays open at the sides, a grass surface instead of turf, and dimensions of 331 feet down the left-field line, about 400 to center and 326 to right. The T-Mobile Park guide covers the dimensions and how the park plays, and the ballpark page has the live reference data.
The ballpark opened as the franchise's greatest players began to leave. Randy Johnson was traded to the Houston Astros in the middle of 1998; his Seattle career ended with 130 wins, 2,162 strikeouts and 19 shutouts, still the club record for shutouts. For the Astros' side of that trade, see the history of the Houston Astros. Griffey was traded to the Cincinnati Reds before the 2000 season, at his own request, so that he could play near his family. Alex Rodriguez, who had hit 189 home runs for Seattle from 1994 through 2000, signed with the Texas Rangers as a free agent after the 2000 season, for what was then the largest contract in baseball history.
Many expected a decline. Instead, in 2000, the Mariners won 91 games (91-71) and earned the wild card, swept the White Sox 3-0 in the division series, and lost the ALCS to the Yankees, 2-4. Kazuhiro Sasaki, a Japanese closer, was the Rookie of the Year with 129 saves for the club between 2000 and 2003.
The 116-win team of 2001
The Mariners of 2001 are the best team in franchise history by a margin. Under Piniella, the club went 116-46, which tied the major-league record of 116 wins set by the 1906 Cubs, who played a shorter schedule. The team had lost Griffey, Johnson and Rodriguez and was built, instead, around depth. Ichiro Suzuki, who came to the major leagues from Japan after a decorated career there, hit .350 with 242 hits and won both Rookie of the Year and Most Valuable Player. Bret Boone had a career year at second base, John Olerud played first, Mike Cameron played center, and Edgar Martinez remained the designated hitter.
The playoff result was a disappointment. Seattle beat Cleveland 3-2 in the division series and then lost to the Yankees in the ALCS, 1-4. No team has since won as many as 116 games in a season through 2025. The lesson usually drawn from 2001 is that the best regular-season team does not always win in a short series, which is true, but it was also the last time the club won a playoff series for more than two decades.
The club continued to be competitive for two more years, finishing 93-69 in 2002 (third in the division) and 93-69 in 2003 (second). Neither season produced a playoff berth. The 2002 attendance of 3,542,938 is the best in the franchise's history. Then the decline began: Piniella left after 2002, and by 2004 the club was 63-99.
The drought, 2002 to 2021
What followed was a long wait. After the 2001 playoffs the Mariners did not play another postseason game until 2022, a gap of 21 years that was widely reported as the longest active drought in North American major professional sports. The teams of that era had some very good seasons and some very bad ones. In 2008 the club lost 101 games (61-101), and again in 2010 (61-101).
The brightest spot was a pitcher. Felix Hernandez, who reached the majors at 19 in 2005 and spent his entire career in Seattle, won 169 games and struck out 2,524 batters, the franchise records. His 2010 season (13-12 with a 2.27 ERA on a team that lost 101 games) won the Cy Young Award, a decision that helped change how voters thought about pitcher wins. In 2012, he threw the first perfect game in club history. Ichiro, after 12 seasons with Seattle, was traded to the Yankees that same summer, and later returned to finish his career in Seattle. His club totals are 2,542 hits and 438 stolen bases, both records, and in 2004 he collected 262 hits, the most in a single season in major-league history through 2025.
Other contributors included third baseman Kyle Seager (242 home runs for the club), designated hitter Nelson Cruz (163 home runs from 2015 to 2018) and Edwin Diaz, the closer (109 saves from 2016 to 2018). Scott Servais managed from 2016 through 2024 and won 680 games, the second-most for the club. The 2021 team won 90 games (90-72) and missed the playoffs by the narrowest of margins at the end of the season.
Breaking through, 2022 to 2025
The streak ended in 2022. The Mariners went 90-72, earned the wild card, and then swept Toronto 2-0 in the wild-card series, coming back from a seven-run deficit in the second game. Julio Rodriguez, the rookie center fielder, won the American League Rookie of the Year award. They were swept by Houston in the division series (0-3), including an 18-inning game that ended 1-0.
The club hovered near the top of the division in 2023 (88-74) and 2024 (85-77), then took the American League West outright in 2025 with a 90-72 record, the franchise's first division title since 2001. In the division series they beat Detroit 3-2 in a series that went the distance (the Tigers' side of it is in the history of the Detroit Tigers). They then pushed the ALCS against Toronto to a seventh game and lost it, 3-4. It was the closest the franchise has come to a pennant.
As of the 2025 season the Mariners remain the only club that has never played in the World Series. Whether that changes is something to check on the standings page rather than something an evergreen article can say.
Eras at a glance
| Era | Years | Park | Manager | Defining names | Outcome |
|---|---|---|---|---|---|
| Expansion | 1977 to 1986 | Kingdome | Johnson, others | Cruz, Davis, Bannister | Three 100-loss seasons |
| Stars arrive | 1987 to 1994 | Kingdome | Williams, Lefebvre, Piniella | Griffey, Johnson, Martinez | First winning seasons |
| Rescue | 1995 to 1997 | Kingdome | Piniella | Griffey, Johnson, Martinez | Division 1995, 1997 |
| New park | 1998 to 2000 | Kingdome, Safeco | Piniella | A-Rod, Sasaki | Wild card 2000, ALCS |
| 116 wins | 2001 to 2003 | Safeco Field | Piniella | Ichiro, Boone, Olerud | Division 2001, ALCS |
| Drought | 2004 to 2021 | Safeco, T-Mobile | Many | Hernandez, Seager, Cruz | No playoffs |
| Return | 2022 to 2025 | T-Mobile Park | Servais, then a successor | Rodriguez | Wild card 2022, division 2025 |
Common questions
Have the Mariners ever won a pennant? No. The historical data shows no league pennant and no World Series title through 2025. They have won four division titles (1995, 1997, 2001 and 2025) and two wild cards (2000 and 2022).
What is the best Mariners season? 2001, at 116-46. Other strong seasons include 93-69 in 2002 and 2003, 91-71 in 2000 and 90-72 in 1997, 2021, 2022 and 2025.
Who are the franchise's Hall of Famers? The historical record lists Edgar Martinez, Ichiro Suzuki, Ken Griffey, Randy Johnson and Adrian Beltre as Hall of Famers with four or more seasons in Seattle. Beltre's time with the club was five seasons.
Why is the ballpark called T-Mobile Park? The club sold the naming rights, and the park that opened as Safeco Field in 1999 took the new name in 2019.
Who won the club's MVP and Cy Young awards? Ken Griffey in 1997 and Ichiro Suzuki in 2001 won the MVP. Randy Johnson in 1995 and Felix Hernandez in 2010 won the Cy Young Award.
Where to go next
Read how the division rivals came to be: the Athletics, the Astros and the Angels each have a history on this site. For the one thing the Mariners have not done, see the history of the World Series. Mariners news is collected at Seattle Mariners news.