Iga Swiatek, Hubert Hurkacz and Team Poland go for a swim in Sydney

Is a pink flamingo floatie the key to Team Poland's success thus far at the United Cup?

In the heat of group-stage battles against Czechia and Norway, Iga Swiatek, Hubert Hurkacz and the rest of the squad took some time to cool off and visit Wylie’s Baths in Sydney, Australia, a 117-year-old establishment.

The men jumped and the women shimmied into the warm waters, with Swiatek holding close to the inflatable bird.

Read more: Jasmine Paolini leads Team Italy in United Cup surf lesson

Seeded No. 2 in the third edition of the mixed-gender team event, Poland sealed a quarterfinal berth on New Year's Day with a win over Czechia, which saw Swiatek beat Karolina Muchova for a third time after Hurkacz was beaten by 24-year-old Tomas Machac.

In the deciding mixed doubles, Hurkacz and Swiatek topped their singles opponents, 7-6(3), 6-3 to advance to a match with Great Britain.

But Czechia advanced to the knockout rounds, too, and will face Jasmine Paolini and Italy in the last eight.

While Poland was sealing its spot in the knockout rounds, the Coco Gauff and Taylor Fritz-led Americans and Kazakhstan, anchored by an unbeaten Elena Rybakina, booked their semifinal berths with wins over China and defending champions Germany, respecitvely.

Watch all of the United Cup the action live on Tennis Channel through championship Saturday on Jan. 4.