Coco Gauff is the new doubles world No.1, following her triumph at the National Bank Open with fellow American Jessica Pegula. The 18-year-old is the second-youngest WTA player in history to achieve the feat after Martina Hingis reached the top spot at 17 years and 251 days old in June 1998.
Third seeds Coco Gauff and Jessica Pegula won their second WTA 1000 doubles title of the year together with a 6-4 6-7(5) [10-5] victory over Nicole Melichar-Martinez and Ellen Perez in the final of the National Bank Open in Toronto.
The triumph has made Gauff the 46th player to hold the No.