Marta Kostyuk stuns 4-time champion Iga Swiatek on big day for Ukraine at French Open CNNMarta Kostyuk stuns Iga Swiatek, KO's last former French champ ESPNKostyuk solves 4-time champ Swiatek, awaits Svitolina in all-Ukrainian Paris quarter WTA TennisKostyuk stuns four-time champion Swiatek Roland-Garros 2026Iga Swiatek has an unhappy birthday after falling to Kostyuk at Fr
