Kostyuk stuns four-time champion Swiatek Roland-Garros 2026Marta Kostyuk stuns Iga Swiatek, KO's last former French champ ESPNMarta Kostyuk stuns 4-time champion Iga Swiatek on big day for Ukraine at French Open CNNMarta Kostyuk ousts Iga Swiatek to guarantee first-time Roland Garros women's champion Tennis.comKostyuk solves 4-time champ Swiatek, awaits Svito