The World Series of Golf was a professional golf tournament on the PGA Tour, played at Firestone Country Club in Akron, Ohio. From its inception in 1962 through 1975, it was an unofficial 36-hole event matching the winners of the four major championships. In 1976 it became an official PGA Tour event; the field expanded to 20 players and the event was lengthened to 72 holes. the victory and $100,000 winner's share went to Nicklaus.