Canadian teenager Victoria Mboko staged a stunning comeback on Thursday to defeat four-time Grand Slam champion Naomi Osaka 2-6 6-4 6-1 claiming her maiden WTA 1000 title at the Canadian Open. The 18-year-old staged a remarkable comeback after losing the opening set to the Japanese former world number one,

Osaka has made some progress since returning in last year's Australian Open. She won two matches in both the Australian Open and Wimbledon this year, has earned $725,727 in prize money so far and reached the No. 49 spot in the WTA rankings, with a higher ranking likely on the way by making the final.

Victoria Mboko is the National Bank Open women's singles champion. The 18-year-old from Toronto defeated Naomi Osaka of Japan 2-6, 6-4, 6-1 at IGA Stadium in Montreal on Thursday.