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The "Seattle Mariners" is a professional baseball team that competes in Major League Baseball (MLB) as part of the American League (AL). Based in Seattle, Washington, the Mariners were established in 1977 and have made several postseason appearances since then. As a member of the AL, the Mariners are one of the twenty-nine teams that make up MLB, which is the highest level of professional baseball in North America. Within the AL, the Mariners belong to the Western Division, where they compete against other teams such as the Houston Astros, Los Angeles Angels, Oakland Athletics, and Texas Rangers. The Seattle Mariners have a rich history and tradition of excellence, with notable players like Ken Griffey Jr., Randy Johnson, Alex Rodriguez, Ichiro Suzuki, and Felix Hernandez having played for the team. The team's home games are played at T-Mobile Park, which is located in Seattle's SoDo neighborhood. Overall, the "Seattle Mariners" subcategory falls under the broader categories of "Sports," "Major League Baseball," and "American League," representing a specific team within MLB's Western Division. The team has a storied history and continues to compete at the highest level of professional baseball in North America.