The Golden State Warriors are an American professional basketball team based in Oakland, California. The Warriors compete in the National Basketball Association, as a member of the league's Western Conference Pacific Division. Founded in 1946 in Philadelphia, the Warriors relocated to the San Francisco Bay Area in 1962 and undertook the city's name, before changing its geographic moniker to Golden State in 1971. They play their home games at the Oracle Arena. The Warriors won the inaugural Basketball Association of America championship in 1947, and won its second championship in 1956, led by Hall of Fame trident Paul Arizin, Tom Gola, and Neil Johnston. However, the Warriors would not return to similar heights in Philadelphia, and after a brief rebuilding period following the trade of star Wilt Chamberlain, the team moved to San Francisco. Under the guise of Jamaal Wilkes and Rick Barry, the Warriors returned to being title contenders, and won their third championship in 1975, in what is largely considered one of the biggest upsets in NBA history.