16-year-old Dayana Yastremska recorded her first WTA victory on Monday (in her fourth tour-level match) at the Istanbul Cup, defeating Andrea Petkovic, 3-6, 6-0, 6-3 to reach the second round. The Wild Card, currently ranked 420, will turn 17 on May 15. She was a runner-up at last year’s Wimbledon Girls event, losing to Anastasia Potopova in a memorable final.
The Ukrainian will face either Kai-Chen Chang of Tapei or Anna Kalinskaya of Russia next.