 Peter Brown's documentary is called Flop Sweat. Why we choke when it matters most. Flop Sweat. The panicky perspiration that pours out of us when we're afraid we're about to flop. Some golfing god is with the young man at this moment and it'll be interesting again to see what he does now. At the 1999 British Open, French golfer Jean Vandevelde was having the tournament of his life.