Federer and Anderson set – waiting for opponents.
Zverev and Cilic looking for that second semis spot.
All will be decided in the Hewitt group.
Djokovic looking unbeatable so far.
Federer tries to turn it around against Thiem.
Djokovic gets it going vs. rookie Isner.
The final event of the season gets under way in London.
First Masters 1000 final – and third indoor final – of the season for Khachanov.
Federer and Djokovic finally meet.
Federer and Djokovic (not against each other) in a blockbuster night session.