Flavia Pennetta will face 74th-ranked Lucie Hradecka to open defending champion Italy's Fed Cup semifinal against the Czech Republic at the Foro Italico Saturday. The second singles match features No. 17 Francesca Schiavone against the top Czech player, No. 38 Lucie Safarova. After reverse singles Sunday, the best-of-five series will conclude with a doubles match featuring Italy's Sara Errani and Roberta Vinci against Petra Kvitova and Kveta Peschke. Roddick withdraws Seventh-ranked Andy Roddick has withdrawn from the Rome Masters citing personal reasons. The American recently celebrated the one-year anniversary of his marriage to model Brooklyn Decker, who was on the cover of the Sports Illustrated Swimsuit issue in February.