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.

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.