The Philadelphia Phillies are an American professional baseball team based in Philadelphia, Pennsylvania. They are the oldest continuous, one-name, one-city franchise in all of professional American sports, dating to 1883. The Phillies are a member of the Eastern Division of Major League Baseball's National League (NL). Since 2004, the team's home has been Citizens Bank Park which is located in South Philadelphia. The Phillies have won two World Series championships (against the Kansas City Royals in 1980 and the Tampa Bay Rays in 2008) and seven National League pennants, the first of which came in 1915. The franchise has also experienced long periods of struggle.