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MELBOURNE, AUSTRALIA - DECEMBER 28: Pat Cash checks in via QR code before boarding the bus ahead of the 2022 tennis season leading into the 2022 Australian Open, at Melbourne Airport on December 28, 2021 in Melbourne, Australia. (Photo by Kelly Defina/Getty Images)

MELBOURNE, AUSTRALIA - DECEMBER 28: Pat Cash checks in via QR code before boarding the bus ahead of the 2022 tennis season leading into the 2022 Australian Open, at Melbourne Airport on December 28, 2021 in Melbourne, Australia. (Photo by Kelly Defina/Getty Images)

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MELBOURNE, AUSTRALIA - DECEMBER 28: Pat Cash arrives on a chartered flight ahead of the 2022 tennis season leading into the 2022 Australian Open, at Melbourne Airport on December 28, 2021 in Melbourne, Australia. (Photo by Kelly Defina/Getty Images)

MELBOURNE, AUSTRALIA - DECEMBER 28: Pat Cash arrives on a chartered flight ahead of the 2022 tennis season leading into the 2022 Australian Open, at Melbourne Airport on December 28, 2021 in Melbourne, Australia. (Photo by Kelly Defina/Getty Images)

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MELBOURNE, AUSTRALIA - DECEMBER 28: Pat Cash arrives on a chartered flight ahead of the 2022 tennis season leading into the 2022 Australian Open, at Melbourne Airport on December 28, 2021 in Melbourne, Australia. (Photo by Kelly Defina/Getty Images)

MELBOURNE, AUSTRALIA - DECEMBER 28: Pat Cash arrives on a chartered flight ahead of the 2022 tennis season leading into the 2022 Australian Open, at Melbourne Airport on December 28, 2021 in Melbourne, Australia. (Photo by Kelly Defina/Getty Images)