STANFORD, CA, USA - Naomi Osaka's first WTA main draw match was an epic one, as the Japanese pulled off a huge upset of World No.19 Samantha Stosur in the first round of the Bank of the West Classic on Monday.
The 16-year-old Osaka came into this week ranked No.406, and her wins here in qualifying were her first at the WTA level.
The 30-year-old Stosur was seeking to put a disappointing grass court season behind her, as she had lost her last three matches - including her Wimbledon opener. Her previous outings in Stanford had been up-and-down, including two semifinal showings and three losses in openers.
The Turning Point
After dropping serve for the first time to lose the first set, Osaka stayed strong in taking a 5-3 lead in the second set. It was eventually settled in a tie-break, where down match point at 7-6, Osaka won three straight points to force a third set.
This time Stosur took a 5-3 lead and this time Osaka rallied, taking the last four games of her two-and-a-half-hour, 4-6, 7-6(7), 7-5 victory.
By The Numbers
This was Osaka's biggest win by far, as she had never previously beaten a Top 100 player. As for Stosur, it was her first loss to someone outside the Top 400 since 2002.
"I don't know anyone who goes into a match thinking they don't deserve to be here, and I think I do deserve to be here," Osaka said.
"It's probably the second-best win of my life, the first being when I first beat my sister."