Czech slugger Tomas Berdych came from way
behind to upset two-time champion Novak Djokovic, while six-time winner
Rafael Nadal and reigning Wimbledon champion Roger Federer each pulled out
quarterfinal victories Friday at the $3.475 million Italian Masters tennis
Red-hot Serena Williams and former world No.
1 Victoria Azarenka secured berths in the semifinals, while two-time defending
champion Maria Sharapova pulled out of her scheduled quarterfinal match Friday
at the Italian Open because of a viral illness.