Ukrainian Kostyuk Stuns 4-Time Champ at French Open

Marta Kostyuk celebrated her 25th birthday with the biggest win of her career, defeating four-time French Open champion Iga Swiatek in straight sets to reach her first Roland-Garros quarterfinal.

The Ukrainian star has now won 16 straight matches on clay, matching a feat achieved by only one other woman in nearly two decades.