Czech Republic's Karolina Muchova and Tomas Machac talk before serving to Poland's Iga Swiatek and Hubert Hurkacz during their mixed-doubles match against at the United Cup on Ken Rosewall Arena in Sydney on January 1, 2025. (Photo by DAVID GRAY / AFP) / -- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE -- (Photo by DAVID GRAY/AFP via Getty Images)