Gauff had to overcome 23 double-faults to win for the first time since the French Open final, outlasting fellow American Danielle Collins 7-5, 4-6, 7-6 (2) in the second round of the National Bank Open.

Coco Gauff superó 14 dobles falta para vencer el jueves 4-6, 7-5, 6-2 a la rusa Veronika Kudermetova para avanzar a los octavos de final del Abierto de Montreal.

Gauff's serve changes are still embedding into her tennis. But she has other ways to win when the double faults start.