Sara Errani and Roberta Vinci will put their friendship to one side Wednesday when they clash in the US Open quarter-finals, the first time Italy has seen two of its players reach the last eight of a major. Errani, the French Open runner-up and 10th seed in New York, reached the quarter-finals for the first time on Monday when she defeated last year’s semi-finalist, German sixth seed Angelique Kerber 7-6 (7/5), 6-3. Vinci, the 30th seed, saw off Polish second seed Agnieszka Radwanska 6-1, 6-4 to qualify for her first Grand Slam quarter-final at the age of 29 and at the 32nd attempt. “We are very good friends in and outside the court. This is one thing that helps very much on the court, because, you know, the other will try and help the other,” said Errani, who has won seven doubles titles this year with Vinci.
