Here are the qualifying scenarios for both the groups in the Indoor Grand Slam aka Barclay’s ATP World Tour Finals

Group A

1. Rafael Nadal has already qualified
2. Stanislas Wawrinka will qualify if he wins AND Tomas Berdych loses
3. Tomas Berdych will qualify if he wins OR Stanislas Wawrinka loses
4. David Ferrer is eliminated

Group B

1. Novak Djokovic has already qualified us the No.1 in the group.
2. The winner of the Roger Federer – Juan Martin Delpotro match on saturday will qualify in 2nd place