The 'King of Clay' has done it again.<br />Rafael Nadal,... who is virtually unbeatable on clay, won his 12th French Open title on Sunday at Roland-Garros in Paris.<br />The 33-year-old Spaniard defeated Dominic Thiem in four sets: 6-3, 5-7, 6-1, 6-1.<br />His latest victory gives him a career total of 18 Grand Slam titles.<br />He now trails Roger Federer and the all-time men's record by just two titles.<br />