- American took just 57 minutes to beat Tunisian 6-0, 6-1 in Cancún
- Poland’s Iga Świątek defeated Czech Marketa Vondrousova 7-6 (3), 6-0
Coco Gauff got off to a dominating start at the WTA Finals on Monday in Cancún, Mexico, routing No 6 seed Ons Jabeur 6-0, 6-1.
Gauff, 19, needed just 57 minutes to seal the victory over the 29-year-old Tunisian Jabeur. The third-seeded Florida native became the first teenager to win a singles match at the season-ending finals since Caroline Wozniacki 14 years ago.