Teenager Daria Kasatkina doesn't just upset the top-ranked player in the world. She also can win a tournament.
The 19-year-old Russian showed patience and poise Sunday to beat fellow teen Jelena Ostapenko 6-3, 6-1 to win her first WTA event at the Volvo Car Open.
It was the first final between two teens on the WTA tour in eight years. Kasatkina, playing in her first final, handled the pressure better, letting her Latvian opponent make mistakes.
She broke Ostapenko in five of her last six service games, including Ostapenko's last game on serve when she made three straight unforced errors to lose the game without a point.
"I got back, I spinned the ball,...