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South Africa's Lloyd Harris hits a return against Argentina's Diego Schwartzman during their men's singles match on day two of the Australian Open tennis tournament in Melbourne on January 21, 2020. (Photo by William WEST / AFP) / IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE (Photo by WILLIAM WEST/AFP via Getty Images)

South Africa's Lloyd Harris hits a return against Argentina's Diego Schwartzman during their men's singles match on day two of the Australian Open tennis tournament in Melbourne on January 21, 2020. (Photo by William WEST / AFP) / IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE (Photo by WILLIAM WEST/AFP via Getty Images)