Greece's Maria Sakkari (L, bottom) and Stefanos Tsitsipas (R, bottom) gesture after winning a point against Spain's Yvonne Cavalle-Reimers (R, top) and Sergio Martos Gornes during their doubles match at the United Cup tennis tournament in Perth on December 28, 2024. (Photo by COLIN MURTY / AFP) / -- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE -- (Photo by COLIN MURTY/AFP via Getty Images)