Victoria Mboko capped off her fairytale story at the National Bank Open Thursday night by winning the champion’s trophy.

In an unforgettable night for Canadian tennis, the country’s teen sensation beat four-time Grand Slam champion Naomi Osaka 2-6, 6-4, 6-1 in the singles final to earn the first WTA title of her young career.

Throughout the 12-day event in Montreal, the 18-year-old wildcard compiled one mesmerizing win after another and vaulted up the rankings. Mboko blossomed from little known wildcard to tournament headliner and a budding household name across Canada. Her never-say-quit matches became appointment television.

The 18-year-old raised in Burlington, Ont., becomes the second-youngest player in the Open Era to defeat four Grand Slam champions in a single tournament, with her wins in Montreal over Osaka, Elena Rybakina, Coco Gauff and Sophia Kenin. The only player to accomplish that at a younger age was 17-year-old Serena Williams at the 1999 US Open.