An inspired Dutch team have put themselves in line to face Australia in the Davis Cup quarter-finals, should Lleyton Hewitt's team slip up in their final group match in Hamburg.

The Australians, who have already qualified for the last-eight in November's finals week shoot-out in Malaga, now know that if they lose to hosts Germany on Sunday, they'll meet the Netherlands on 22 November at the Spanish venue.

That schedule was confirmed on Saturday after the Dutch defeated the USA to decide who would top group D in a tie being played in Glasgow, Scotland.

Botic van de Zandschulp settled the tie when he defeated leading American Taylor Fritz 6-4 7-6 (7-3) after Tallon Griekspoor had opened up for the Dutch with a 7-5 7-6 (7-3) victory over Tommy Paul.

With the tie already lost, Rajeev Ram and Jack Sock earned a consolation doubles victory for the US over Wesley Koolhof and Matwe Middelkoop.

If Australia win their final tie against the Germans to top group C, they'll play the runners-up in group B, and that will be either Canada or Serbia.

Canada stayed top of their group on Saturday even though they were beaten 2-1 by Serbia, who are now level on two wins apiece but behind on number of rubbers won.

Should Spain, led by world No.1 Carlos Alcaraz, win Sunday's final tie against Korea in front of their home Valencia crowd as they're firmly expected to, then they'll win the group.

That would then leave Australia playing Canada, who can boast the firepower of Felix Auger-Aliassime and Denis Shapovalov, in the quarters.

Should Spain lose, though, Hewitt's men would face Serbia, who could recall the ace in their pack, Novak Djokovic.

In Saturday's group C tie in Hamburg, France beat Belgium 2-1 in the consolation duel between the two countries that lost both their ties to Germany and Australia earlier in the week.

Croatia beat Argentina 3-0 in Bologna in a group A headed by Jannik Sinner-inspired Italy, who are guaranteed a place in the last eight.