A total of 16 national teams, with their tennis players and captains, will fight to win the first official tournament of the season. Next, we break down all the contenders:
Spain
Roberto Bautista Agut
Pablo Carreño Busta
Albert Ramos-Viñolas
Alejandro Davidovich Fokina
Pedro Martinez
Captain: Daniel Gimeno-Traver
Germany
Alexander Zverev
Jan-Lennard Struff
Yannick Hanfmann
Kevin Krawietz
Tim Puetz
Captain: Michael Kohlmann
Argentina
Diego schwartzman
Federico Delbonis
Federico Coria
Maximum González
Andres Molteni
Captain: Alejandro Fabbri
Australia
Alex de Miñaur
James duckworth
Max purcell
John peers
Luke saville
Captain: Leyton Hewitt
Canada
Felix Auger-Aliassime
Denis Shapovalov
Brayden schnu
Steven Ten
Captain: Felix Auger-Aliassime
chili
Cristian Garin
Alexander Tabilo
Tomás Barrios Vera
Captain: Jorge Aguilar
U.S
Taylor fritz
John isner
Brandon nakashima
Rajeev ram
Captain: Michael Russell
France
Ugo Humbert
Arthur Rinderknech
Edouard Roger-Vasselin
Fabrice Martin
Captain: Nicolas Copin
Georgia
Nikoloz Basilashvili
Aleksandre Metreveli
Aleksandre bakshi
Zura Tkemaladze
Saba Purtseladze
Captain: David Kvernadze
Britain
Cameron norrie
Daniel evans
Liam broady
Joe salisbury
Jamie Murray
Captain: Liam Broady
Greece
Stefanos Tsitsipas
Michail Pervolarakis
Petros Tsitsipas
Markos Kalovelonis
Aristotelis Thanos
Captain: Apostolos Tsitsipas
Italy
Matteo berrettini
Jannik Sinner
Lorenzo Sonego
Simone bolelli
Fabio Fognini
Captain: Vincenzo Santopadre
Norway
Casper ruud
Viktor Durasovic
Lukas Hellum-Lilleengen
Leyton Rivera
Andreja Petrovic
Captain: Christian Ruud
Poland
Hubert hurkacz
Kamil Majchrzak
Kacper zuk
Jan Zielinski
Szymon walkow
Captain: Marcin Matkowski
Russia
Daniil Medvedev
Roman safiullin
Evgeny karlovskiy
Captain: Gilles Cervara
Serbia
Dusan Lajovic
Filip Krajinovic
Nikola Cacic
Matej sabanov
Captain: Ivan Sabanov