The Los Angeles Lakers are an American professional basketball team based in Los Angeles. The Lakers are one of the most successful teams in the history of the NBA, and have won 17 NBA championships, tied with the Boston Celtics for the most in NBA history. The franchise began with the 1947 purchase of a disbanded team, the Detroit Gems of the National Basketball League (NBL). The new team began playing in Minneapolis, Minnesota, calling themselves the Minneapolis Lakers. Initially a member of the NBL, the Lakers won the 1948 NBL championship before joining the rival Basketball Association of America, where they would win five of the next six championships, led by star George Mikan. After struggling financially in the late 1950s following Mikan's retirement, they relocated to Los Angeles before the 1960–61 season. Led by Hall of Famers Elgin Baylor and Jerry West, Los Angeles made the NBA Finals six times in the 1960s, but lost every series to the Celtics, beginning their long and storied rivalry.