The United Cup is back for a third time, with the unique and unifying mixed-teams event set to light up the Australian summer. Played in Perth this Summer, it's the tennis to watch! 18 countries compete at the 2025 United Cup, drawn into six groups of three teams and competing in a round-robin format. Perth’s RAC Arena and one other city will host three groups each – meaning nine countries overall in each city. The official draw in October will reveal where each country will start their season. Each team can have up to six members – a maximum of three Association of Tennis Professionals (ATP) players and three Woman's Tennis Association (WTA) players. Each team will also have a captain.