David Nalbandian and Eduardo Schwank earned Argentina a 2-1 lead on Saturday after an epic doubles victory in Buenos Aires.

CNN: Bryan brothers give U.S. edge in Davis Cup quarters

The American will next face France's Arnaud Clement , who led 6-3 5-5 when Argentina's Eduardo Schwank retired with an ankle injury.

BBC: Roger Federer wins at US Open as Davydenko & Cilic lose

Saturday's doubles matches see Argentine pairing Carlos Berlocq and Eduardo Schwank take on Ivo Minar and Lukas Rosol -- who dumped Rafael Nadal out of Wimbledon in June.

CNN: Spain surge into lead against U.S. in Davis Cup semis

In the other semifinal, Argentina's hopes of winning a first Davis Cup suffered a setback in Buenos Aires as Tomas Berdych and Radek Stepanek of the Czech Republic beat Carlos Berlocq and Eduardo Schwank in the doubles match on Saturday.

CNN: Bryan brothers keep U.S. Davis Cup dreams alive

The winners will race last year's runners-up Argentina , who ensured their place in the quarterfinals with a 3-0 win over Germany in Bamberg after David Nalbandian and Eduardo Schwank overcame Tommy Haas and Philipp Petzschner 3-6 4-6 6-4 6-3 6-4 on Saturday.

CNN: Federer loses again as Swiss crash out to U.S.