Seventh-ranked David Nalbandian of Argentina will play Igor Andreev in the opening singles Friday of the Davis Cup semifinal against Russia. Juan Martin del Potro will face No. 6 Nikolay Davydenko in the second match on clay at Parque Roca Stadium in front of a 14,000 sellout crowd. Argentines Agustin Calleri and Guillermo Canas will pair against Igor Kunitsyn and Dimitry Tursunov in Saturday's... More...