It was a rough day for Naomi Osaka, and landmark one for the Canadian teenager Victoria Mboko. Mboko, 18, came back to stun the four-time Grand Slam champion 2-, 6-4, 6-1 in the final of the Canadian Open on Thursday, earning her the first WTA title of her career in front of a home crowd.

Canadian teenager Victoria Mboko completed a dream run to the National Bank Open title Thursday night, overcoming a slow start to beat Japanese star Naomi Osaka 2-6, 6-4, 6-1.

Victoria Mboko did it again on Thursday night, rallying back through the pain of a wrist injury to defeat four-time Grand Slam winner Naomi Osaka 2-6, 6-4, 6-1 in the National Bank Open final, capping a fairytale run that fans across Canada won’t soon forget.