US Open 2011 latest results

Flushing Meadows, New York - After experiencing delays due to weather conditions, here are the latest results of the 2011 US Open.

MEN
Quarterfinals
 Novak Djokovic (1) def. Janko Tipsarevic (20)
7-6 (7-2), 6-7 (3-7), 6-0, 3-0 retired
 Roger Federer (3) vs. Jo-Wilfried Tsonga (11) 3-2

 Fourth Round
 Rafael Nadal (2) def. Gilles Muller 7-6 (7-1), 6-1, 6-2
 Andy Murray (4) def. Donald Young 6-2, 6-3, 6-3
 Andy Roddick (21) def. David Ferrer (5) 6-3, 6-4, 3-6, 6-3

 John Isner (28) def. Gilles Simon (12) 7-6 (7-2), 3-6, 7-6 (7-2), 7-6 (7-4)

WOMEN
Quarterfinals
 Caroline Wozniacki (1) def. Andrea Petkovic (10) 6-1, 7-6 (7-5)
 Samantha Stosur (9) def. Vera Zvonareva (2) 6-3, 6-3
 Serena Williams (28) def. Anastasia Pavlyuchenkova (17) 7-5, 6-1
 Angelique Kerber def. Flavia Pennetta (26) 6-4, 4-6, 6-3