Spain’s Rafael Nadal, the King of Clay, won his 10th French Open title by beating Switzerland’s Stan Wawrinka, at Roland Garros, Paris, scoring 6-2, 6-3, 6-1. The 31-year-old Spaniard won two more than any other player in history – and his 15th major tournament triumph overall. Starting with the 2015 Wimbledon Championships, he went six…