But Swiatek rose to the challenge with a crushing 6-2, 6-1 win over Sorribes Tormo to force a deciding mixed doubles rubber.

The four-time grand slam champion and Hurkacz then needed little more than half an hour to wrap up the tie 2-1 with a 6-0, 6-0 drubbing of Sorribes Tormo and Davidovich to make Poland the first nation through to the quarterfinals, as Group A winners.

Poland and Spain defeated Brazil in their other ties.

In Sydney, three-time grand slam finalist Casper Ruud kept Norway's quarter-final chances flickering with victories in the singles and doubles against Team Croatia.

Donna Vekic had given Croatia an early 1-0 lead with a hard-earned 7-5, 3-6, 6-3 win over unheralded Malene Helgo.

But Ruud then clubbed Borna Coric 6-4, 6-1 to send the tie to a decisive mixed encounter, which Norway claimed in a match tiebreaker.

The 6-2, 3-6, 10-7 victory for Ruud and Ulrikke Eikeri over Vekic and Ivan Dodig leaves Norway (1-1) anxiously awaiting the outcome of the last remaining Group F fixture between Croatia (0-1) and the Netherlands (1-0).