FRIBOURG, Switzerland — The United States swept favored Switzerland out of the Davis Cup on Saturday when Mardy Fish and Mike Bryan beat Roger Federer and Stanislas Wawrinka 4-6, 6-3, 6-3, 6-3.

Teaming for only the second time, Fish and Bryan comfortably handled the 2008 Olympics doubles champions in front of an occasionally hostile Swiss crowd of 7,000.

The Americans were kept under control for a set and a half, then seized every opportunity to exploit errors on Wawrinka’s service. The crowd got angry when Bryan hit both Federer and Wawrinka with volleys at close range later in the match.

Fish and Bryan picked up the momentum of Friday’s thrilling wins by captain Jim Courier’s team. In the singles, John Isner stunned Federer in four sets and Fish outlasted Wawrinka in five.