Poland's Iga Swiatek and Hubert Hurkacz hit a return to Czech Republic's Karolina Muchova and Tomas Machac during their mixed doubles match at the United Cup tennis tournament 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)