Watch Team Australia take on the world in the United Cup, live and exclusive on 9Now and Stan Sport.

10am | SYDNEY | (3) USA v (14) Czech Republic

J Pegula def by P Kvitova 7-6, 6-4

F Tiafoe def T Machac 6-3, 2-4 (retired)

Followed by J Pegula/T Fritz v J Maleckova/D Svrcina

11am | BRISBANE | (5) Italy v (11) Brazil

M Berrettini def T Monteiro 6-4, 7-6

L Bronzetti def L Pigossi 6-0, 6-2

Followed by C Rosatello/M Bortolotti v L Stefani/R Matos

1pm PERTH | (1) Greece v (16) Bulgaria

M Sakkari def V Tomova 6-3, 6-2

Followed by M Pervolarakis v D Kuzmanov

Followed by M Sakkari/S Tsitsipas v V Tomovaa/G Dimitrov

5.30pm | SYDNEY | (7) Australia v (15) Great Britain

A Tomljanovic v H Dart

Followed by J Kubler v D Evans

Followed by S Stosur/J Peers v H Dart/D Evans

6.30pm | BRISBANE | (9) Switzerland v (13) Kazakhstan

S Wawrinka v A Bublik

Followed by J Teichmann v Z Kulambayeva

Followed by B Bencic/S Wawrinka v Y Putintseva/A Bublik

8.30pm | PERTH | (6) France v (17) Argentina

C Garcia v N Podoroska

Followed by A Mannarino v F Coria

Followed by C Garcia/E Roger-Vasselin v N Podoroka/F Cerundolo