Kostyuk Upsets Swiatek at French Open: A Look at the Surprising Defeat

Iga Swiatek, the world No. 3, suffered a disappointing defeat at the French Open, losing in straight sets to Marta Kostyuk in the fourth round. Kostyuk, ranked No. 15, showcased her skills in a competitive first set that saw both players deliver impressive shots. Swiatek's errors proved costly, as she surrendered her serve after breaking ahead 4-3 and committed a crucial double fault in the final game of the set, allowing Kostyuk to claim the set. Despite Swiatek's early break in the second set, Kostyuk responded with a break of her own and went on to win six consecutive games to secure the victory.
The defeat marks a significant setback for Swiatek, who struggled in the second set and suffered only her fourth loss at the French Open. In contrast, Kostyuk advances to her second Grand Slam quarter-final, with her previous appearance dating back to the 2024 Australian Open. She maintains an impressive unbeaten streak on clay in 2026, having won all 16 matches played on the surface. Kostyuk's next challenge will be against either Elina Svitolina or Belinda Bencic in the round of 16.
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