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

Canada’s Victoria Mboko continues to shine bright as she secured the biggest win of her short career. The 18-year-old defeated current world number two and top-seed Coco Gauff in the fourth round of the National Bank Open in Montreal in straight sets with a score of 6-1,

On Sunday, Victoria Mboko knocked off No. 1 seed Coco Gauff at the Omnium Banque Nationale 6-1, 6-4 in a little over an hour to advance to Monday’s quarterfinals. She’s the youngest woman to make the elite eight here since Gauff three years ago.