Madison Keys overcame early nerves and Alina Korneeva 7-5, 6-4 at the US Open, avenging last year's first-round exit after improving her serving and composure.
No. 1 seed Aryna Sabalenka of Belarus had little trouble getting past China's Qinwen Zheng in a group-stage match at the WTA Finals on Saturday, prevailing 6-3, 6-4 in Riyadh, Saudi Arabia.
World No. 3 Coco Gauff and No. 2 Iga Swiatek of Poland won their respective opening matches of the Orange Group at the WTA Finals Riyadh in Saudi Arabia.
