Caroline Wozniacki is winning matches as well as fans at the U.S. Open . Jo-Wilfried Tsonga 7-5 7-5 6-4 . The world No. 1 has won her first three matches, including a straight-sets win over former World No.1 Victoria Azarenka in straight sets. Wozniacki is now picking up her game after being dumped by Rory McIlroy in May . Dane will play Italian 13th seed Sara Errani in quarterfinals in New York .
Caroline Wozniacki is winning matches as well as fans at the U.S. Open . The world No. 1 has won her first three matches, including a straight-sets win over former World No.1 Victoria Azarenka in straight sets. Wozniacki is now picking up her game after being dumped by Rory McIlroy in May . Dane will play Italian 13th seed Sara Errani in quarterfinals in New York .