Belgrade, Serbia (Sports Network) - The doubles team of Nenad Zimonjic and Viktor Troicki won in straight sets Saturday to keep defending champion Serbia afloat in their Davis Cup semifinal with Argentina.
Zimonjic and Troicki dominated the tandem of Juan Ignacio Chela and Juan Monaco, 7-6 (7-4), 6-4, 6-2. a day after David Nalbandian and Juan Martin del Potro picked up victories in the singles rubbers to open the best-of-five tie.
Hometown hero Novak Djokovic pulled out of the opening singles Friday, but could play in the first reverse singles match Sunday against del Potro. Djokovic, who won the U.S. Open title on Monday, decided against playing Friday due to back pain and was replaced by Troicki. Nalbandian won that match in four sets.
The reigning U.S. Open, Wimbledon and Australian Open titlist Djokovic, who is an amazing 64-2 this year and has earned more than $10.6 million in prize money, led the Serbs to their first-ever Davis Cup title last year when they beat the French in the final in Belgrade.
Djokovic has a 19-6 singles match record in Davis Cup play.
Argentina is seeking an elusive first-ever Davis Cup championship.
Serbia is part of the former Yugoslavia, which beat Argentina in Belgrade in their lone Davis Cup matchup way back in 1964.
The winner will face the France-Spain victor in the 2011 Davis Cup final in December.
09/17 12:11:51 ET