Radwanska, Haas out of US Open, Li Na makes quarterfinals
In the evening session of day 7 at the US Open, 2012 Wimbledon runner-up Agnieszka Radwanska lost to Ekaterina Makarova of Russia, 6-4, 6-4 despite having a 4-0 lead in the first set.
In other night matches, Chinese player Li Na swept past Serbia's Jelena Jankovic 6-3, 6-0.
Russia's Mikhail Youzhny won against Germany's Tommy Haas in four sets, with the score of 6-3, -2, 2-6, 6-3.