Pakistan, Aug. 9 -- Canadian teenager Victoria Mboko staged a stunning comeback on Thursday to beat four-time Grand Slam champion Naomi Osaka 2-6 6-4 6-1 and secure her maiden WTA Tour title at the Canadian Open in Montreal.

The 18-year-old wild card rallied after dropping the first set to the Japanese former world number one, who had established a 3-0 lead, and held firm to cap a remarkable fortnight at home.

It was Mboko's fourth win over a Grand Slam champion in the tournament after the world number 85 defeated Sofia Kenin, Coco Gauff and Elena Rybakina en route to the final.

"These past two weeks have been insane," said Mboko, who began the year ranked number 333.

"Even getting the wild card to play here I was super happy to be pl...