When Roberto De Vicenzo signed an incorrect scorecard to lose the 1968 Masters, it represented not just his failure, but the failure of several individuals and institutions, including Augusta National itself. This is the story of what really happened that day on the course, and why De Vicenzo is only partly to blame for the greatest blunder in the history of major championship golf.

What happens when two men who are each forces of nature, in their own way, clash at the most prestigious championship in American golf? When one is rich and handsome and headstrong, but the other is the lord of Augusta National? When Cliff Roberts, the chairman of Augusta, and Frank Stranahan, the playboy son of a millionaire, collided at the Masters in 1948, it was inevitable that something wild would happen. And something did—a controversy that shed a light on two of the strangest American lives in golf history, and gave a glimpse at the paranoia and exclusivity that dominated old Augusta.

The Official World Golf Ranking has never enjoyed the prominence it has today, but it's not the good kind of prominence. With some of the world's best players no longer receiving points since they're with LIV, the OWGR is under fire, and even LIV-neutral observers think it might be dying. But what is the OWGR? How does it work? How did it come about historically? This week on Local Knowledge, we go deep on the system that is reeling, and might need a eulogy before long.