Germany were the fastest team into September's semi-finals, continuing a long tradition of thrashing Belgium.
It ended a woeful few days for reigning champions Croatia. They left with two losses.
The event played in one location over seven days in November could start next year, pending approval by the ITF Board.
Spain secured their second successive Davis Cup triumph, and their fourth in all, when they extended their lead over Czech Republic to an unassailable 3-0 in Saturday's doubles.
Injury-stricken Rafael Nadal and Wimbledon finalist Andy Roddick will be among the big names forced to miss the Davis Cup World Group quarter-finals starting on Friday.
The Australian become just the fourth man to win the race twice at the Olympics.
Spain went 2-1 ahead in the Davis Cup final against Argentina on Saturday when Fernando Verdasco and Feliciano Lopez beat David Nalbandian and Agustin Calleri in a fiery doubles encounter. Nalbandian and Calleri took the first set before the visitors hit back for a 5-7, 7-5, 7-6 (7-5), 6-3 win in three hours 19 minutes to put Spain within reach of a shock win.
France won their 10th Davis Cup title when Lucas Pouille crushed Steve Darcis 6-3, 6-1, 6-0 to give the hosts a 3-2 victory in the final against neighbours Belgium on Sunday.
Jannik Sinner won his maiden Grand Slam title at the Australian Open on Sunday.
Nalbandian's spectacular performance in the Davis Cup final against Russia over the weekend suggests that he is ready to challenge the tennis elite.
In his place, Tommy Robredo has been called up alongside David Ferrer, Feliciano Lopez and Fernando Verdasco.
World No 7 Tomas Berdych will lead the Czech Davis Cup team in their semi-final clash against Argentina later this month.
Holders Spain were on the brink of elimination in the Davis Cup quarter-finals on Friday after France won both the opening singles in Clermont-Ferrand.
Holders Spain clinched a Davis Cup semi-final berth at home to the United States when David Ferrer cruised to a 7-5, 6-3, 6-3 victory over Austria's Juergen Melzer to give the hosts an unassailable 3-1 lead on Sunday.
World number five David Ferrer cruised to a 6-2, 6-3, 7-5 win over Tomas Berdych to put defending champions Spain level with the Czech Republic at 2-2 in the Davis Cup final on Sunday.
The Czech Republic's Tomas Berdych brought the hosts level at 1-1 with holders Spain in the Davis Cup final with a battling five-set victory over Nicolas Almagro on Friday.
British Foreign Secretary Liz Truss on Tuesday extended her bookmaker odds as the favourite to win the Conservative Party leadership race, with former Chancellor Rishi Sunak also trailing in a poll among Tory voters.
Conchita Martinez will take over as Spain's Davis Cup captain for the Group I tie away to Russia.
Britain will attempt to win the Davis Cup for the first time in 79 years this weekend when they take on Belgium in Ghent, although if they do succeed the Scottish town of Dunblane could argue its name should be enscribed on the trophy.
An already depleted India suffered another blow on Saturday with Rohan Bopanna pulling out of the Davis Cup World Group Play-off tie against Spain, claiming that he suffered a knee injury during the US Open.
Arsenal had more than twice as many chances but failed to take any as the visitors defended gamely.
Top 10 duo Rafael Nadal and Fernando Verdasco have returned to the Spain side for next month's Davis Cup final against Czech Republic, captain Albert Costa said on Monday.
If "innovation" were a person, he or she would have looked like David Bowie.
World No 5 David Ferrer will lead Spain's bid to claim their fourth Davis Cup title in five years when the holders take on the Czech Republic in this month's final in Prague.
Canada raced to a 2-0 lead over Spain in their Davis Cup world group first round tie on Friday, pushing the five-times champions to the brink of defeat and moving to within a doubles victory of a maiden win at this level.
A crowd of more than 22,000 at his home Sydney Cricket Ground rose for a final ovation as Warner left the field.
Brothers Jamie and Andy Murray claimed a tense four-hour doubles rubber against Australian pair Lleyton Hewitt and Sam Groth on Saturday to put Britain 2-1 up and on the verge of a first Davis Cup final since 1978.
Both nations took 2-1 leads in their semi-finals with doubles victories.
The Argentine No 1 overpowered Russia's Marat Safin in the second singles after Nikolay Davydenko beat Juan Ignacio Chela.
The government of British Prime Minister Theresa May was plunged into turmoil.
Leonardo Mayer beat Joao Souza in a Davis Cup singles match that lasted a record six hours and 42 minutes.
A fired-up Andy Murray showed his class to draw Britain level with Belgium on day one of the Davis Cup final after David Goffin's escape act from a two-set deficit had given the hosts the lead in Ghent on Friday.
The world number one has been struggling with tendinitis in his knees since being knocked out of the French Open last month and was forced to miss Wimbledon.
Spain shrugged off the absence of Rafa Nadal to take a 2-0 lead over hosts the United States in their Davis Cup World Group quarter-final after gutsy wins by Feliciano Lopez and David Ferrer on Friday.
The BBC is not driven by an "agenda" but by purpose and will not be put off reporting impartially and without fear or favour, the UK-headquartered media organisation's chief has said days after the income tax department survey operation at its New Delhi and Mumbai offices.
David Ferrer toppled Philipp Kohlschreiber in a thrilling five-hour marathon decider as Spain roared back from 2-1 down in their Davis Cup tie against Germany to reach the semi-finals on Sunday.
World number two Novak Djokovic fired Serbia to a 2-0 lead over the United States in Belgrade with a 6-2, 7-6, 2-6, 6-3 victory over Sam Querrey, after compatriot Viktor Troicki's hard-fought win over John Isner, also in four sets.
Toni Nadal has given a lukewarm response to the decision by the Spanish Tennis Federation (RFET) to appoint former women's Tour player Gala Leon as Spain's new Davis Cup captain.
Argentina took a big step towards reaching the Davis Cup final when David Nalbandian and Juan Martin Del Potro secured a 2-0 lead over holders Serbia on Friday.