Arnold Palmer bogeys the par 4 17th, during the final round of the US Open in San Francisco, California, June 19, 1966.
1966 Olympic Club
Even “The King” can falter under the intense Open pressure. Entering the back nine on the last day, Palmer held a seemingly insurmountable 7-shot lead. But, as TIME wrote back in 1966, “in one of the most shocking turnabouts in sports history, Palmer blew 1) his lead, 2) his cool and 3) the tournament.” Palmer started shanking tee shots and putts, Billy Casper went on a tear, and pair needed an 18-hole playoff to determine the winner. Remarkably, Palmer blew another lead the next day, as he was up by two with eight holes to go, but gave back six strokes down the stretch to lose, 73-69.