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,

Naomi Osaka’s bid to reclaim a title fell just short. Osaka had not been able to find her top form for much of the season, and a string of narrow three-set losses had clearly affected her confidence on court.