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SYDNEY, AUSTRALIA - JANUARY 02: John Isner of the United States of America hits a forehand during his group C match against Brayden Schnur of Canada during day two of the 2022 ATP Cup tie between the United States of America and Canada at Qudos Bank Arena on January 02, 2022 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

SYDNEY, AUSTRALIA - JANUARY 02: John Isner of the United States of America hits a forehand during his group C match against Brayden Schnur of Canada during day two of the 2022 ATP Cup tie between the United States of America and Canada at Qudos Bank Arena on January 02, 2022 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)