Roland Garros: Sabalenka's 100th win seals quarters, Kostyuk ousts Swiatek

On the clay of Court Philippe-Chatrier, in that stretch of a match where points stop being counted by the scoreboard and start being counted by the nerves, the first serve finally began to land exactly where it needed to. Aryna Sabalenka had been losing her rhythm in the opening set against Naomi Osaka, then found it at the moment it mattered most. The Belarusian turned the set around, closed it out, and never let go of control after that.

Day nine at Roland Garros settled the top half of the women’s draw, and it did so with little mercy for the favourites. Sabalenka went through, but the biggest story of the day came from another court, where one of the tournament’s greatest champions of the past decade went down.

How much does a 100th win at the top of the rankings mean?

Sabalenka beat Osaka 7-5, 6-3 to reach the quarter-finals. That win was not just another step toward the title, but a round, symbolic number: it was her 100th win as world number one. Few players in the history of the sport reach that figure while still sitting on the throne, and the stat says a great deal about how long the Belarusian has held the top and how steadily she plays on a surface that has not historically been her favourite.

Against Osaka it looked like a match of two different tempos. The Japanese player kept pace through the first set and caused problems with deep groundstrokes, but once Sabalenka locked in her serve and started dictating from the baseline, the room for a surprise disappeared. In the quarter-finals she now meets Diana Shnaider, who reached the last eight by beating Madison Keys. Sabalenka goes in as the favourite, yet Shnaider has already shown she can punish any lapse in concentration.

For the world number one, this is exactly the kind of tournament where reputations are built. Not the kind made by a single dazzling match, but the kind made by a run of wins in which you rarely play perfectly and still keep advancing.

The shock of the day: Kostyuk topples Swiatek

While Sabalenka quietly went about her work, the fourth round delivered a genuine shock. Marta Kostyuk knocked out Iga Swiatek in straight sets, the four-time Roland Garros champion and until recently the undisputed queen of the Paris clay. For the Pole, this is a bitter result for several reasons.

• It is the first time since 2019 that Swiatek has failed to reach the quarter-finals in Paris.
• The tournament where she built her status as the best clay-court player this year lost her as early as the fourth round.
• Kostyuk got the job done without a third set, which makes the defeat all the more emphatic.

The Ukrainian played a match in which the risk paid off. She hit flat, held the line and never let Swiatek settle into that recognisable rhythm in which she slowly suffocates her opponents. Once she saw she was on her way through, she simply pressed harder.

That leaves the top half of the draw without two big names. As a reminder, defending champion Coco Gauff went out earlier, in the third round, so the path to the final is suddenly more open than anyone expected at the start of the tournament.

Who would have said a week ago that, going into the Roland Garros quarter-finals, both the defending champion and a four-time winner would already be gone, and that the world number one’s 100th win would almost slip by in the shadow of someone else’s exit?

Now comes the Sabalenka, Shnaider quarter-final, and the bottom half of the draw suddenly looks like an open field for someone yet to lift a trophy in Paris. Do you think Sabalenka goes all the way this time, or will someone stop her before she reaches her first title on clay?