Philadelphia is one of thirteen cities that hosts teams in the "Big Four" major sports leagues in North America, and Philadelphia is one of just four cities in which one team from every league plays within city limits. These major sports teams are the Philadelphia Phillies of Major League Baseball, the Philadelphia Eagles of the National Football League, the Philadelphia 76ers of the National Basketball Association and the Philadelphia Flyers of the National Hockey League. Each team has played in Philadelphia since at least the 1960s, and each team has won at least two championships. Since 2010, the Greater Philadelphia area has been the home of the Philadelphia Union of Major League Soccer, making the Philadelphia market one of nine cities that hosts a team in the five major sports leagues. Prior to the 1970s, Philadelphia was home to several other notable professional franchises, including the Philadelphia Athletics, the Frankford Yellow Jackets, the Philadelphia Warriors, the Philadelphia Quakers, and the Philadelphia Field Club.