Coco Gauff sailed through the final four games of the second set to defeat fellow American Jessica Pegula 6-4, 7-5 and capture the Wuhan Open on Sunday in China.

It was the first time the third-seeded Gauff and sixth-seeded Pegula -- friends and former doubles partners -- met in a final.

Gauff needed one hour and 42 minutes to defeat Pegula, who couldn't capitalize on a 3-0 lead in the second set. With Pegula leading 5-3, Gauff broke Pegula's serve in her to final service games to close out the victory.

Gauff, 21, had an easier route to the final than the 31-year-old Pegula, with competitors playing in brutal heat and humidity throughout the week. Gauff had lost only 16 games in Shanghai before the final. Pegula played four three-set matches, including her defeat of world No. 1 Aryna Sa

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