Pakistan, Aug. 11 -- At 22 years of age, Coco Gauff is building an incredible resume. The fourth-seeded Floridian routed Russian teenager Alina Korneeva 6-3, 6-1 on Sunday to advance to the quarterfinals of the National Bank Open in Toronto.

In the first match of the day, second-seeded Elena Rybankina of Kazakhstan outlasted Russia's Liudmila Samsonova in a marathon, 6-4, 4-6, 6-4.

Gauff became the second player to reach 25 Tier 1/WTA 1000 quarterfinals before her 23rd birthday.

Martina Hingis, who like Gauff was producing victories in her teens, made 39 quarters in the 1990's.

Gauff lost her serve to open the match, but broke right back and won three of Korneeva's four service games in the opening set.

It was more of the same in the...