New York, Sep 2 (IANS): Following are the results from day seven of the US Open tennis championships.

Men's singles: (prefix number denotes seeding)
Third round:

1-Novak Djokovic (SER), bt Joao Sousa (POR)- 6-0, 6-2, 6-2

Marcel Granollers (ESP), bt Tim Smyczek (US)- 6-4, 4-6, 0-6, 6-3, 7-5

21-Mikhail Youzhny (RUS), bt 12-Tommy Haas (GER)- 6-3, 6-2, 2-6, 6-3

Lleyton Hewitt (AUS), bt Evgeny Donskoy (RUS)- 6-3, 7-6 (7-5), 3-6, 6-1

3-Andy Murray (GBR), bt Florian Mayer (GER)- 7-6 (7-2), 6-2, 6-2

Denis Istomin (UZB), bt 20-Andreas Seppi (ITA)- 6-3, 6-4, 2-6, 3-6, 6-1

5-Tomas Berdych (CZE), bt 31-Julien Benneteau (FRA)- 6-0, 6-3, 6-2

9-Stanislas Wawrinka (SUI), bt Marcos Baghdatis (CYP)- 6-3, 6-2, 6-7 (1-7), 7-6 (9-7)

Women's singles:
Fourth Round:

1-Serena Williams(USA), bt 15-Sloane Stephens (USA)- 6-4, 6-1

18-Carla Suarez Navarro (ESP), bt 8-Angelique Kerber (GER)- 4-6, 6-3, 7-6 (7-3)

24-Ekaterina Makarova (RUS), bt 3-Agnieszka Radwanska (POL)- 6-4, 6-4

5-Li Na (CHN), bt 9-Jelena Jankovic (SER)- 6-3, 6-0