Group A
Germany

Alexander Zverev

Angelique Kerber
France

Lucas Pouille

Alize Cornet
Australia

Matt Ebden

Ashleigh Barty
Spain

David Ferrer

Garbine Muguruza
Group B
USA

Frances Tiafoe

Serena Williams
Switzerland

Roger Federer

Belinda Bencic
Greece

Stefanos Tsitsipas

Maria Sakkari
Great Britain

Cameron Norrie
