Ivo Karlovic will open for Croatia against Radek Stepanek of the Czech Republic in the first singles match of their Davis Cup semifinal. The draw on Thursday also pitted Croatia's Marin Cilic against Tomas Berdych in the second singles match on Friday. In doubles play Saturday, Lovro Zovko and Roko Karanusic will play Czech pair Lukas Dlouhy and Jan Hajek. More...