World number one and defending champion Iga Swiatek took just 51 minutes to reach the French Open fourth round on Saturday as Coco Gauff ended 16-year-old Mirra Andreeva's memorable Paris debut. Swiatek blitzed 80th-ranked Wang Xinyu of China 6-0, 6-0 on the back of 21 winners as the 22-year-old Pole took another step closer to becoming the first woman since Justine Henin in 2007 to win back-to-back titles at Roland Garros. Of the six sets she has played so far, four have been to love. In all she has dropped just eight games through three rounds.