After sweeping aside American Donald Young in Wimbledon second round, Rafael Nadal gave an autograph that most sports stars would have seen as the strangest of their career. As Nadal left the court after his 6-4, 6-2, 7-5 win, one adoring fan passed the Spaniard his prosthetic leg and asked him to sign it. Asked if it was the strangest autograph he had ever signed, Nadal said with a smile and a raffish wink: "Probably not."