SYDNEY, AUSTRALIA - DECEMBER 31: Dusan Lajovic of Serbia during a practice session ahead of the 2022 ATP Cup at on December 31, 2021 in Sydney, Australia. (Photo by Mark Evans/Getty Images)
SYDNEY, AUSTRALIA - DECEMBER 31: Dusan Lajovic of Serbia during a practice session ahead of the 2022 ATP Cup at on December 31, 2021 in Sydney, Australia. (Photo by Mark Evans/Getty Images)