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SYDNEY, AUSTRALIA - JANUARY 05: Grigor Dimitrov of Bulgaria plays a backhand during his Group C singles match against Radu Albot of Moldova during day three of the 2020 ATP Cup Group Stage at Ken Rosewall Arena on January 05, 2020 in Sydney, Australia. (Photo by Cameron Spencer/Getty Images)

SYDNEY, AUSTRALIA - JANUARY 05: Grigor Dimitrov of Bulgaria plays a backhand during his Group C singles match against Radu Albot of Moldova during day three of the 2020 ATP Cup Group Stage at Ken Rosewall Arena on January 05, 2020 in Sydney, Australia. (Photo by Cameron Spencer/Getty Images)