Watching how Victoria Mboko sliced through the National Bank Open competition and took down four Grand Slam winners to her first WTA title, it's hard to imagine the 18-year-old Canadian was once nervous before tennis matches and easily flustered on the court.

Osaka has made 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 and reached the No. 49 spot in the WTA rankings, with a higher ranking likely on the way by making the final.