Britain have been drawn against Rafael Nadal’s Spain and Nick Kyrgios’ Australia in the inaugural United Cup from next month.
The mixed team event will take place in Brisbane, Perth and Sydney as part of the build-up to the Australian Open in January.
British men’s number one Cameron Norrie will play, but 2021 US Open women’s champion Emma Raducanu did not enter.
The tournament, which runs from December 29 to January 8, features 18 teams and $18m (£15m) in prize money.
Greece, captained by men’s world number three Stefanos Tsitsipas, are the top seed, while women’s world number one Iga Swiatek plays for second-seeded Poland.
Serbia, whose squad could have included 21-time Grand Slam champion Novak Djokovic, did not participate.
Djokovic, who missed the Australian Open this year after being expelled for not being vaccinated against Covid-19, is banned from entering the country until 2025. However, officials the Australian Open have said he can play in 2023 if he gets a visa.
The British squad, which will play in Perth, is completed by Dan Evans, Harriet Dart, Katie Swan, Anna Brogan, Jonny O’Mara, Jan Choinski and Ella McDonald.
The three host cities will each host two groups of three countries competing in a round robin format.
Each match consists of two men’s singles matches and two women’s singles matches and one mixed doubles.
The group winners from each city will play each other, with the winners of those three matches being joined by the next highest performing team in the semi-finals.