A decisive win over Spain in front of a partisan crowd left the Americans confident they'll end their 12-year Davis Cup drought.

The United States secured a spot in the semifinals today when the top-ranked doubles team of Bob and Mike Bryan beat Spain's Feliciano Lopez and Fernando Verdasco 7-5, 6-3, 3-6, 7-6 (5).

Coupled with Friday's singles wins by Roddick and Blake, it gave the United States an insurmountable 3-0 lead in the best-of-five event, putting the Americans a step closer to their first Davis Cup title since 1995.

"Yes, this is our year," Bob Bryan said, drawing a roar from the sellout crowd of more than 14,000.

After dropping the third set on the fast, indoor hard court, the Bryans survived two break points at 4-4 in the fourth set before closing it out in the tiebreaker.

"I was so nervous there," Roddick said to the fans. "But we're all going out tonight so come along and join us. What do you think?"

The United States eliminated a Spanish squad weakened by the absence of Rafael Nadal and will next play at Sweden on Sept. 21-23. Sweden downed Argentina 3-0 on Saturday. In other quarterfinals, Germany ousted Belgium 3-0, and Russia won its doubles match to lead France 2-1.

The Bryans improved to 11-1 in the Davis Cup with a harder-than-expected match against an inexperienced team. They sealed the match on Bob Bryan's volley at the net, two points after Mike Bryan's net cord on Lopez's serve gave the United States a 6-4 lead.

"They've been our rock every time out. Every time I've been on the team, they've given us a win," Blake said. "It's a lock, and it feels so good to have that."

The brothers immediately embraced after the winning point, setting off a flag-waving celebration. The outcome provided a bit of revenge for the United States — Spain beat the Americans in the 2004 final on clay.

With Nadal home resting a sore foot, the United States took a 2-0 lead on Friday when Roddick beat Verdasco and Blake beat Tommy Robredo. Roddick and Blake watched the doubles match from the team area, and both took turns taking laps with the American flag.

"We feel good. Going to Sweden is a tough match, but they have tough decisions to make about what surface to play us on," U.S. captain Patrick McEnroe said. "We've got a great chance. ... hopefully that match to win and one more."

Sunday's reverse singles matches against Spain were rendered meaningless and will likely be reduced to best-of-three sets. McEnroe said Roddick, recovering from a strained left hamstring, would not play. Blake will be joined by one of the Bryan brothers.

The Bryans have won 36 doubles titles and five Grand Slams, including this year's Australian Open. Lopez and Verdasco are not in their league, but the Spaniards tested them on this day.

"We were more solid in our returns and at the end we were playing so much better than the beginning of the match," Verdasco said. "We are very happy that we are improving and hopefully we'll become a good team in Davis Cup."

Coming in 1-1 playing together in the Davis Cup, Lopez and Verdasco struggled early on the quick surface, but loosened up after dropping the first two sets. They broke Bob Bryan to take a 4-2 lead, and Lopez later served out the set with an ace, the first set taken by Spain in the competition.

"It was a scary match. They were playing with no pressure when we went up 2-0," Mike Bryan said. "They were serving huge. We couldn't read their serves. So, it felt so good to finish off that last tiebreaker."

Verdasco and Lopez, both left-handers, broke the Bryans in the first set. But serving at 5-6, Mike Bryan sent a shot into Lopez's body on break point. The Americans broke Spain again on Lopez's serve to go up 4-2 in the second set, and the United States served out the set on Bob Bryan's ace.

"It was a tough team to play and we were trying to do our best," Verdasco said. "When you are playing good players it's difficult to win in their house."

In other Davis Cup doubles matches:

At Goteborg, Sweden, Jonas Bjorkman and Thomas Johansson rallied to beat Guillermo Canas and David Nalbandian 4-6, 7-6 (4), 6-2, 6-3 on fast indoor carpet. Sweden is captained by Mats Wilander, a seven-time Grand Slam champion. Argentina was a finalist last year.

At Ostend, Belgium, Alexander Waske and Michael Kohlmann beat Belgians Olivier and Christophe Rochus 4-6, 6-2, 6-3, 6-1, to lead Germany to its first Davis Cup semifinal since 1995. Germany will play Russia or France in the semifinals.