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MELBOURNE, AUSTRALIA - JANUARY 20: Jannik Sinner of Italy plays a backhand in his second round singles match against Steve Johnson of the United States during day four of the 2022 Australian Open at Melbourne Park on January 20, 2022 in Melbourne, Australia. (Photo by Clive Brunskill/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 20: Jannik Sinner of Italy plays a backhand in his second round singles match against Steve Johnson of the United States during day four of the 2022 Australian Open at Melbourne Park on January 20, 2022 in Melbourne, Australia. (Photo by Clive Brunskill/Getty Images)