Errani and Vinci upset Dulko and Pennetta at U.S. Open

15th seeds Sara Errani and Roberta Vinci upset countrywoman Flavia Pennetta and her partner, Gisela Dulko today in the third round of the U.S. Open. Dulko and Pennetta were seeded second. Errani and Vinci lost the first set 4-6, but won the next two, 7-5, 6-2.

The surprise run of teenagers Jessica Pegula and Taylor Townsend ended when they were defeated 6-4, 6-2 by defending champions Vania King and Yaroslava Shvedova. King and Shvedova are seeded third at the tournament.

In mixed doubles, Melanie Oudin and Jack Sock continued their strong run. They won their quarterfinal match against Barbora Zahlavova Strycova and Philipp Petzschner, defeating them 6-3, 7-6.

12th seed Madison Keys won her opening round in junior singles. Keys won her main draw first round match.