There have been 20

managers Management (or managing) is the administration of organizations, whether businesses, nonprofit organizations, or a government bodies through business administration, nonprofit management, or the political science sub-field of public administr ...

in the history of the

Seattle Mariners 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) American League West, West Division. The team joined the American ...

Major League Baseball Major League Baseball (MLB) is a professional baseball league composed of 30 teams, divided equally between the National League (baseball), National League (NL) and the American League (AL), with 29 in the United States and 1 in Canada. MLB i ...

(MLB) franchise. The Mariners franchise was formed in

1977 Events January * January 8 – 1977 Moscow bombings, Three bombs explode in Moscow within 37 minutes, killing seven. The bombings are attributed to an Armenian separatist group. * January 10 – Mount Nyiragongo erupts in eastern Zaire (no ...

as a member of the American League.

Darrell Johnson Darrell Dean Johnson (August 25, 1928 – May 3, 2004) was an American professional catcher, coach, manager and scout in Major League Baseball (MLB). As a manager, he led the 1975 Boston Red Sox to the American League pennant, and was named " ...

was hired as the first Mariners manager, serving for just over three seasons before being replaced during the

1980 Events January * January 4 – U.S. President Jimmy Carter proclaims a United States grain embargo against the Soviet Union, grain embargo against the USSR with the support of the European Commission. * January 6 – Global Positioning Sys ...

season. In terms of tenure,

Lou Piniella Louis Victor Piniella ( usually ; born August 28, 1943) is a former professional baseball player and manager. An outfielder, he played 18 seasons in Major League Baseball (MLB) with the Baltimore Orioles, Cleveland Indians, Kansas City Royals a ...

has managed more games and seasons than any other coach in their franchise history. He managed the Mariners to four playoff berths (

1995 1995 was designated as: * United Nations Year for Tolerance * World Year of Peoples' Commemoration of the Victims of the Second World War This was the first year that the Internet was entirely privatized, with the United States government ...

1997 Events January * January 1 – The Emergency Alert System is introduced in the United States. * January 11 – Turkey threatens Cyprus on account of a deal to buy Russian S-300 missiles, prompting the Cypriot Missile Crisis. * January 1 ...

2000 2000 was designated as the International Year for the Culture of Peace and the World Mathematics, Mathematical Year. Popular culture holds the year 2000 as the first year of the 21st century and the 3rd millennium, because of a tende ...

and

2001 The year's most prominent event was the September 11 attacks against the United States by al-Qaeda, which Casualties of the September 11 attacks, killed 2,977 people and instigated the global war on terror. The United States led a Participan ...

), led the team to the

American League Championship Series The American League Championship Series (ALCS) is a best-of-seven playoff and one of two League Championship Series comprising the penultimate round of Major League Baseball's (MLB) postseason. The winner of the ALCS wins the AL pennant and ...

in 1995, 2000 and 2001, and won the

Manager of the Year Manager of the Year may refer to: * Major League Baseball Manager of the Year Award * League Managers Association Awards#LMA Manager of the Year, League Managers Association Manager of the Year * Premier League Manager of the Season {{disambiguati ...

award in 1995 and 2001. Until 2022, Piniella was the only manager in Mariners history to lead a team into the playoffs, with one of those times after a 116-win season, tying the record for most wins in a season. None of the previous managers had made it to the playoffs before. Piniella, however, managed the team in 34 playoff games, winning 15 and losing 19.

Dick Williams Richard Hirschfeld Williams (May 7, 1929 – July 7, 2011) was an American left fielder, third baseman, manager (baseball), manager, coach (baseball), coach and front-office consultant in Major League Baseball (MLB). Known especially as a hard-d ...

is the only Mariners manager to have been inducted into the

Baseball Hall of Fame The National Baseball Hall of Fame and Museum is a history museum and hall of fame in Cooperstown, New York, operated by a private foundation. It serves as the central collection and gathering space for the history of baseball in the United S ...

. There have been nine interim managers in Mariners history. In 1980, manager Darrell Johnson was replaced by

Maury Wills Maurice Morning Wills (October 2, 1932 – September 19, 2022) was an American professional baseball player and manager. He played in Major League Baseball as a shortstop from 1959 to 1972, most prominently as an integral member of the Los Ange ...

. In

1981 Events January * January 1 ** Greece enters the European Economic Community, predecessor of the European Union. ** Palau becomes a self-governing territory. * January 6 – A funeral service is held in West Germany for Nazi Grand Admiral ...

, manager

Rene Lachemann Rene George Lachemann (born May 4, 1945) is an American former professional baseball coach, catcher and manager. He spent 53 years in Major League Baseball (MLB), including service as the manager of the Seattle Mariners (1981–83), Milwaukee Br ...

replaced Maury Wills. In

1983 1983 saw both the official beginning of the Internet and the first mobile cellular telephone call. Events January * January 1 – The migration of the ARPANET to TCP/IP is officially completed (this is considered to be the beginning of the ...

, Lachemann was relieved by

Del Crandall Delmar Wesley Crandall (March 5, 1930May 5, 2021) was an American professional baseball player and manager. Crandall played as a catcher in Major League Baseball from 1949 to 1966, most prominently as a member of the Boston / Milwaukee Braves wh ...

. Crandall did not last a full season either, as

Chuck Cottier Charles Keith Cottier (January 8, 1936 – February 1, 2021) was an American second baseman, manager, coach, and scout in Major League Baseball (MLB). Born in Delta, Colorado, Cottier graduated from Grand Junction High School, where he lette ...

took over his job in

1984 Events January * January 1 – The Bornean Sultanate of Brunei gains full independence from the United Kingdom, having become a British protectorate in 1888. * January 7 – Brunei becomes the sixth member of the Association of Southeas ...

. By

1986 The year 1986 was designated as the International Year of Peace by the United Nations. Events January * January 1 ** Aruba gains increased autonomy from the Netherlands by separating from the Netherlands Antilles. ** Spain and Portugal en ...

, Cottier was replaced with a temporary manager, Marty Martinez. After one game, the Mariners found Dick Williams to take over the role of manager. He in turn was replaced by Jim Snyder in

1988 1988 was a crucial year in the early history of the Internet—it was the year of the first well-known computer virus, the Morris worm, 1988 Internet worm. The first permanent intercontinental Internet link was made between the United State ...

. In

2007 2007 was designated as the International Heliophysical Year and the International Polar Year. Events January * January 1 **Bulgaria and Romania 2007 enlargement of the European Union, join the European Union, while Slovenia joins the Eur ...

, manager

Mike Hargrove Dudley Michael Hargrove (born October 26, 1949) is an American former professional baseball first baseman and Manager (baseball), manager. He is currently employed as an advisor with the Cleveland Guardians in Major League Baseball (MLB). Hargrov ...

resigned in a surprise move amidst a winning streak, citing increased difficulty in putting forth the same effort he demanded of his players. Hargrove was replaced with bench coach John McLaren midseason. A year later, in

2008 2008 was designated as: *International Year of Languages *International Year of Planet Earth *International Year of the Potato *International Year of Sanitation The Great Recession, a worldwide recession which began in 2007, continued throu ...

, the Mariners front office decided McLaren was not performing by their standards, and was fired and replaced by interim manager

Jim Riggleman James David Riggleman (born November 9, 1952) is an American former Major League Baseball (MLB) manager (baseball), manager and bench coach who coached with several teams between 1989 and 2019. During his playing career, Riggleman was an infield ...

. New

general manager A general manager (GM) is an executive who has overall responsibility for managing both the revenue and cost elements of a company's income statement, known as profit & loss (P&L) responsibility. A general manager usually oversees most or all of ...

Jack Zduriencik John A. Zduriencik (; born January 11, 1951) is an American radio broadcaster and former professional baseball executive, scout, and player. He currently works as a radio host for KDKA-FM, which is affiliated with the Pittsburgh Pirates. He also ...

hired

Don Wakamatsu Wilbur Donald Wakamatsu (born February 22, 1963) is an American former professional baseball player, scout, coach, and manager. Wakamatsu was drafted in the 11th round of the 1985 Major League Baseball draft by the Cincinnati Reds. He played as ...

as skipper for the

2009 2009 was designated as the International Year of Astronomy by the United Nations to coincide with the 400th anniversary of Galileo Galilei's first known astronomical studies with a telescope and the publication of Astronomia Nova by Joha ...

season; after finishing the season with a .525

winning percentage In sports, a winning percentage or Copeland score is the fraction of games or matches a team or individual has won. The statistic is commonly used in standings or rankings to compare teams or individuals. It is defined as wins divided by the to ...

, the team's poor performance coupled with off-field issues led to Wakamatsu's firing on August 9, 2010. Daren Brown, who was the manager of the Mariners' Triple-A affiliate, the

Tacoma Rainiers The Tacoma Rainiers are a Minor League Baseball team of the Pacific Coast League (PCL) and the Triple-A (baseball), Triple-A affiliate of the Seattle Mariners. They are located in Tacoma, Washington, and play their home games at Cheney Stadium, ...

, managed the Mariners for the remainder of the 2010 season.

Eric Wedge Eric Michael Wedge (born January 27, 1968) is an American former baseball Major League Baseball (MLB) catcher and manager. As a player, Wedge attended Northrop High School in Fort Wayne and played on the school's state champion baseball team in ...

was hired to manage the team for the 2011 to 2013 seasons.

Lloyd McClendon Lloyd Glenn McClendon (born January 11, 1959) is an American former professional baseball player, coach and manager. He played in Major League Baseball (MLB) as an outfielder from 1987 to 1994 for the Cincinnati Reds, Chicago Cubs, and the Pitt ...

was hired as the Mariners' manager on November 7, 2013.

Key

''Statistics are accurate through the end of the 2023 Major League Baseball Season.''

Managers

Notes

* A running total of the number of managers of the Mariners. Thus any manager who has had two or more terms as manager is only counted once.

References

{{Seattle Mariners managers

Managers Management (or managing) is the administration of organizations, whether businesses, nonprofit organizations, or a government bodies through business administration, nonprofit management, or the political science sub-field of public administr ...