Stanislas Wawrinka's maiden French Open title has helped him climb to the fourth spot in the latest world rankings. The Swiss, who moved up five places, is just one below his career best. The top three remain unchanged. Novak Djokovic, who was on the losing side in the Rolland Garros Final, continues to be world number one, while Roger Federer is second and Andy Murray third.However, after losing to Djokovic in the quarter-finals, just the second time in his 72 games at Paris, Rafael Nadal has dropped three places to 10th. In the Women's section, Czech Lucie Safarova, who lost the final to world number one Serena Williams, has climbed to a career best of 7. Serena has stretched her lead at the top, while another Czech Petra Kvitova has replaced Maria Sharapova in the number two slot. Sharapova is fourth behind Simona Halep of Romania.