Seattle Mariners

Seattle Mariners, a privately owned entity headquartered in the US, was founded in 1977 and employs approximately 1,230 individuals. The company specializes in sports tickets, merchandise, and sponsorship. The Seattle Mariners operate as an American professional baseball team based in Seattle, competing 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, originally 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.