Alexander Zverev (front R) of Germany and Thiago Monteiro (front L) of Brazil pose for a photo before their men's singles match in the Group E round robin match between Germany and Brazil at the 2025 United Cup tennis tournament in Perth, Australia, Dec. 29, 2024. (Photo by Zhou Dan/Xinhua)
Alexander Zverev of Germany serves during the men's singles match against Thiago Monteiro of Brazil in the Group E round robin match between Germany and Brazil at the 2025 United Cup tennis tournament in Perth, Australia, Dec. 29, 2024. (Photo by Zhou Dan/Xinhua)
Alexander Zverev of Germany hits a return during the men's singles match against Thiago Monteiro of Brazil in the Group E round robin match between Germany and Brazil at the 2025 United Cup tennis tournament in Perth, Australia, Dec. 29, 2024. (Photo by Zhou Dan/Xinhua)
Thiago Monteiro of Brazil serves during the men's singles match against Alexander Zverev of Germany in the Group E round robin match between Germany and Brazil at the 2025 United Cup tennis tournament in Perth, Australia, Dec. 29, 2024. (Photo by Zhou Dan/Xinhua)
Beatriz Haddad Maia of Brazil hits a return during the women's singles match against Laura Siegemund of Germany in the Group E round robin match between Germany and Brazil at the 2025 United Cup tennis tournament in Perth, Australia, Dec. 29, 2024. (Photo by Zhou Dan/Xinhua)
Beatriz Haddad Maia of Brazil hits a return during the women's singles match against Laura Siegemund of Germany in the Group E round robin match between Germany and Brazil at the 2025 United Cup tennis tournament in Perth, Australia, Dec. 29, 2024. (Photo by Zhou Dan/Xinhua)
Beatriz Haddad Maia of Brazil hits a return during the women's singles match against Laura Siegemund of Germany in the Group E round robin match between Germany and Brazil at the 2025 United Cup tennis tournament in Perth, Australia, Dec. 29, 2024. (Photo by Zhou Dan/Xinhua)
Laura Siegemund of Germany competes during the women's singles match against Beatriz Haddad Maia of Brazil in the Group E round robin match between Germany and Brazil at the 2025 United Cup tennis tournament in Perth, Australia, Dec. 29, 2024. (Photo by Zhou Dan/Xinhua)
Laura Siegemund of Germany hits a return during the women's singles match against Beatriz Haddad Maia of Brazil in the Group E round robin match between Germany and Brazil at the 2025 United Cup tennis tournament in Perth, Australia, Dec. 29, 2024. (Photo by Zhou Dan/Xinhua)
Alexander Zverev of Germany hits a return during the men's singles match against Thiago Monteiro of Brazil in the Group E round robin match between Germany and Brazil at the 2025 United Cup tennis tournament in Perth, Australia, Dec. 29, 2024. (Photo by Zhou Dan/Xinhua)
