PARIS — A day or so before the French Open commenced and the rain began to fall, Novak Djokovic shot a series of short, amusing commercials with Gustavo Kuerten, the genial, mop-topped, three-time French Open champion from Brazil.
In one of the spots, Djokovic, who at that point had never won the tournament, asked Kuerten for the secret of Roland Garros.
The power, Kuerten said as they sat in a car, is in the hair, and he presented Djokovic with a curly wig that the Serb dutifully placed atop his head, almost like a crown.