Bloemfontein, South Africa (My Sportsbook) - United States striker Charlie Davies said qualifying for the semifinals of the Confederations Cup "basically felt like we did the impossible."

Now, the Americans have to do the impossible again.

The U.S. beat Egypt 3-0 on Sunday and, coupled with Brazil's shocking 3-0 win over Italy, miraculously advanced. The Americans reward is a semifinal game vs. world No. 1 Spain on Wednesday at 2:25 (ET) at Free State Stadium. Brazil plays South Africa in the other semifinal Thursday at 2:25 (ET).

Spain has won a record 15 straight games and in unbeaten in 35 in a row. Spain rolled through Group A in the Confederations Cup, topping New Zealand 5-0, Iraq 2-0 and South Africa, the highest rated opponent of the group at 72nd, 2-0.

The 14th-ranked Americans are a significant upgrade according to the FIFA world rankings, but the separation between the two nations is still huge.

Spain hasn't lost since Nov. 15, 2006 in a friendly against Romania and its win streak dates back a 0-0 tie with Italy in Euro 2008 knockout play, which Spain won in penalty kicks on its way to the title.

But the United States, which lost 3-1 to Italy and 3-0 to Brazil in Group B, is full of confidence after its win over Egypt.

"I think it's a little bit of disbelief," said American defender Jay DeMerit. "Nobody thought we'd be in this position when the game started but we certainly earned it."

The United States didn't look impressive against Brazil and Italy - a pair of top-five teams - but also played a man down in both matches. Ricardo Clark was ejected from the loss to Italy midway through the first half and Sacha Kljestan was sent off against Brazil.

The U.S. is the first team in the history of the FIFA World Cup or the FIFA Confederations Cup to advance to the next round with a 1-2-0 group record. The United States advanced ahead of Italy based on goals scored, 4-3.

The Americans have a chance to redeem themselves and shock the world - but it's going to take all 11 men against Spain.

The U.S. is 0-5-1 against top-five teams under coach Bob Bradley, and is 1-7-1 all-time against No. 1 teams. The U.S. beat No. 1 Brazil in 1998, 1-0, and tied No. 1 Argentina last June, 0-0.

The Americans got needed contributions from Davies, Michael Bradley and Clint Dempsey - the goal scorers against Egypt - and their defense has held together well despite a number of changes.

Jonathan Spector stepped in at right back, DeMerit slotted in at center back, and Jonathan Bornstein has started at left back with numerous players injured or not performing. Teamed with Oguchi Onyewu, a regular starter in the middle, the group has started all three games together.

After the showing against Egypt, which beat Italy 1-0, the United States has to at least a little more comfortable in the back against Spain.

Spain was led through the group stage by Valencia's David Villa and Liverpool's Fernando Torres - two of the top strikers in the world - who each bagged three goals.

Spain is unbeaten in three all-time games against the U.S. Spain won the first meeting at the 1950 FIFA World Cup, won a friendly in 1992, and most recently beat the U.S. last June 1-0 in Spain.

U.S. forward Jozy Altidore, who has started all three matches, may have said it best on his Twitter page: "Team looks ready to do the damn thing!"

That would be beating Spain. And while that is improbable, it's not impossible.