Result grid
Group A
Rafael Nadal
Stanislas Wawrinka
Tomáš Berdych
David Ferrer
Points
Rafael NadalNadal
3
Stanislas WawrinkaWawrinka
2
Tomáš BerdychBerdych
1
David FerrerFerrer
0
Group B
Novak Djokovic
Roger Federer
Juan Martín del Potro
Richard Gasquet
Points
Novak DjokovicDjokovic
3
Roger FedererFederer
2
Juan Martín del Potrodel Potro
1
Richard GasquetGasquet
0