Canadian teenager Victoria Mboko upset top-seeded Coco Gauff 6-1, 6-4 on Saturday night to reach the National Bank Open quarterfinals.

Victoria Mboko, world No. 85 and a wild card at the Canadian Open, secured the biggest win of her career Saturday night, trouncing two-time Grand Slam champion Coco Gauff 6-1, 6-4 in Montreal. This time last year,

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.