Coco Gauff sealed her place in the fourth round of the Canadian Open after coming from a set down to beat former top 10 player Veronika Kudermetova in Montreal. The 21-year-old hit over a dozen double faults for the second consecutive match on the hard courts and revealed her disappointment with her performance despite the victory.

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

It’s not often that the world No. 2 goes two months without winning a match, but that’s the reality Coco Gauff was facing late Tuesday night in Montreal, on the cusp of a third consecutive loss, this time in her opening duel at the Canadian Open.