Poland's Iga Swiatek reacts during a practice session on Ken Rosewall Arena in Sydney on December 27, 2024 ahead of the start of the United Cup tennis tournament. (Photo by DAVID GRAY / AFP) / -- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE -- (Photo by DAVID GRAY/AFP via Getty Images)

Poland's Iga Swiatek (R) talks to coach Wim Fissette during a practice session on Ken Rosewall Arena in Sydney on December 27, 2024 ahead of the start of the United Cup tennis tournament. (Photo by DAVID GRAY / AFP) / -- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE -- (Photo by DAVID GRAY/AFP via Getty Images)

Poland's Iga Swiatek (R) talks to coach Wim Fissette during a practice session on Ken Rosewall Arena in Sydney on December 27, 2024 ahead of the start of the United Cup tennis tournament. (Photo by DAVID GRAY / AFP) / -- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE -- (Photo by DAVID GRAY/AFP via Getty Images)

Poland's Iga Swiatek reacts during a practice session on Ken Rosewall Arena in Sydney on December 27, 2024 ahead of the start of the United Cup tennis tournament. (Photo by DAVID GRAY / AFP) / -- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE -- (Photo by DAVID GRAY/AFP via Getty Images)

Poland's Iga Swiatek (top) takes a break with Britain's Katie Boulter during a practice session on Ken Rosewall Arena in Sydney on December 27, 2024 ahead of the start of the United Cup tennis tournament. (Photo by DAVID GRAY / AFP) / -- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE -- (Photo by DAVID GRAY/AFP via Getty Images)

Poland's Iga Swiatek reacts during a practice session on Ken Rosewall Arena in Sydney on December 27, 2024 ahead of the start of the United Cup tennis tournament. (Photo by DAVID GRAY / AFP) / -- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE -- (Photo by DAVID GRAY/AFP via Getty Images)

Poland's Iga Swiatek hits a shot during a practice session on Ken Rosewall Arena in Sydney on December 27, 2024 ahead of the start of the United Cup tennis tournament. (Photo by DAVID GRAY / AFP) / -- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE -- (Photo by DAVID GRAY/AFP via Getty Images)

Poland's Iga Swiatek hits a shot during a practice session on Ken Rosewall Arena in Sydney on December 27, 2024 ahead of the start of the United Cup tennis tournament. (Photo by DAVID GRAY / AFP) / -- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE -- (Photo by DAVID GRAY/AFP via Getty Images)