Wu Yibing became the first Chinese man to win an ATP Tour title with victory over John Isner at the Dallas Open.
The 23-year-old, ranked 97th in the world, won 6-7 (4-7) 7-6 (7-3) 7-6 (14-12) in just under three hours.
He saved four match points against American former world number eight Isner.
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Wu is set to rise to world number 58 when the rankings are updated on Monday, making him the highest-ranked Chinese player in ATP history.
Playing in his maiden Tour-level final, he did not compete on the Tour from March 2019 to January 2022 because of numerous injuries.