David Ferrer beat American John Isner in four sets to help Spain reach the final of the Davis Cup in the Spanish port city of Gijon.
Spain, who are bidding for a fourth Davis Cup crown in five years, will play the Czech Republic for the title, after they beat Argentina in the other-semi-final.
Ferrer got the better of Isner 6-7 (3), 6-3, 6-4, 6-2 leading to a 3-1 win over the U.S., after Spain claimed the opening singles matches on Friday with the U.S. pulling one back in the doubles, thanks to the Bryan brothers - Bob and Mike -- on Saturday.
The Czech Republic, which was swept 5-0 by Spain in the 2005 final, will host the Nov. 16-18 Davis Cup final after beating last year's runner-up Argentina 3-2 in Buenos Aires.
"It was a very tough, very difficult tie but we are really happy as we are in another Davis Cup final, something that is extremely hard to achieve," Ferrer told Spanish television.
"Now we just need to enjoy it and rest and prepare for the final," added the 30-year-old, who has won five titles this year, and reached the U.S. Open semi-finals this month.
In the other semi-final, world number six Tomas Berdych gave the Czech Republic an unassailable 3-1 lead in Buenos Aires when he defeated Argentine replacement Carlos Berlocq in the first reverse singles.
Agrentina's Juan Monaco, playing in the second reverse singles, a dead rubber, in the absence of injured Juan Martin del Potro, got the better of Ivo Minar 6-3, 7-6 (2), but the Czechs walked away into the finals with a 3-2 win.
Berdych and his teammates will likely choose the hard courts for the Nov. 16-18 final as Spain are extremely tough to beat on their favored clay.
But Spanish captain Alex Corretja said was not concerned about the surface, and his players will adapt well to conditions and surface. "Here you play in front of your home crowd and on your best surface and you pick everything," he was quoted as saying by the Davis Cup website.
"We'll wait and see what the opponents want and be ready for that and try to do our best."
Ferrer said the Spaniards were hoping Rafael Nadal, who is out with a knee injury, would recover ahead of the final. "Spanish tennis is blessed with very good players, led by Rafa Nadal, and we hope he recovers soon because he is fundamental for us."