DUESSELDORF, Germany (AP)—The United States fell to its second straight defeat at the Team World Cup and Serbia posted its second victory in two matches on Tuesday.
Tomas Berdych and Radek Stepanek won their singles in straight sets, Berdych defeating Andy Roddick 6-1, 6-2 and Stepanek cruising past James Blake 6-2, 6-1.
Serbia also took an unassailable 2-0 lead over Russia.
Germany leads Croatia 1-0 and Argentina is 1-0 ahead against Japan.