The Seattle Mariners are an American professional baseball team based in Seattle. They 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. Their mascot is the Mariner Moose. The franchise did not field a winning team until 1991 and further success eluded them until 1995 when they won their first division championship and defeated the New York Yankees in the ALDS. The Mariners 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 2022, the franchise has finished with a losing record in 30 of 46 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 2022, the Mariners’ all-time win–loss record is 3,402 – 3,783