On Sunday, Australian tennis player Nick Kyrgios decided to withdraw from the ATP Cup match against Canada due to backache. He was replaced by Australian number three John Millman, who did not disappoint the home fans and played his part in the Australian team's 3–0 win against Canada. On the basis of his superb game, the Australian team got a great win and the score ended 3–0. Millman did this in straight sets, which was fantastic in itself.

Kyrgios was scheduled to face Felix Auger Eliassem, but after the Australian player withdrew, Millman had to enter the match. Millman defeated Canada's Eliassem 6-4, 6-2 in straight sets in a men's singles match that lasted an hour and 43 minutes. Earlier, domestic player Alex de Minor beat Canada's Denis Shapovalov 6-7, 6-4, 6-2 in a three-set match. The match lasted for three hours and three minutes. At the same time, in the men's doubles match in Group-F, Australia's John Pearce and Chris Guchionne defeated the Canadian pair of Eliassem and Adil Shamsadin 3-6, 7-6, 10-8. At the same time, in the other results of the same group, Germany beat Greece 2–1.

Apart from this, Italy won 2–1 over Norway in Group-D matches in Perth, while Russia beat America 2–0. On the other hand, in the Group-C in Sydney, Bulgaria did not have much trouble defeating Moldova 2–1, while the Belgian team lost 1-2 to Britain.