Second-seeded Karolina Pliskova was eliminated from the French Open, ensuring that Naomi Osaka will hold onto the No. 1 ranking after the tournament.
Pliskova lost to No. 31 Petra Martic 6-3, 6-3 in the third round.
Pliskova entered the tournament with a seven-match winning streak, which included the Italian Open title, but she couldn't keep up with Martic on the long rallies on Court Philippe Chatrier, often bending over in exhaustion after extended points.
It was Martic's tour-best 14th win on clay this season. The Croatian has not dropped a set in her opening three matches.