Even Victoria Mboko couldn’t believe what she achieved. It was billed as the tournament’s marquee match. A rising Canadian star — and last remaining singles hope from the host country — facing her stiffest test yet against the No.

Mboko opened with a win over 79th-ranked Kimberly Birrell, then upset 23rd seed and former Grand Slam champion Sofia Kenin before snapping Marie Bouzkova’s seven-match winning streak with a relentless comeback and taking down Gauff, dropping one set the whole way.

Victoria Mboko earned the biggest win of her young career with a dominant win over No. 1 seed Coco Gauff of the United States to reach the National Bank Open quarterfinals in Montreal. The 18-year-old from Toronto is having a breakthrough season after starting the year ranked outside the top 300. (Aug. 3, 2025)