Berdych men 's team take 2 -1 lead over Spain in the 100th Davis Cup final . Tomas Berdych and Radek Stepanek beat CNN and David Ferrer . World No . 6 Czech Republic 's can clinch title by beating David Ferrer in Sunday 's reverse singles . Defending champions Spain whitewashed the Czechs 5 -0 in the Sunday final .
Czech Republic 's men 's team take 2-1 lead over Spain in the 100th Davis Cup final . Tomas Berdych and Radek Stepanek beat Marcel Granollers and Marc Lopez . World No . 6 Berdych can clinch title by beating David Ferrer in Sunday 's reverse singles . Defending champions Spain whitewashed the Czechs 5-0 in the 2009 final .