Petkovic upsets Jankovic, Clijsters survives

Andrea Petkovic pulled off another upset at the Sony Ericsson Open on Tuesday, defeating sixth seed Jelena Jankovic to reach the semi-finals, while Kim Clijsters needed all her big-match experience......

Miami: Top seed Wozniacki upset by German Petkovic

World number one Caroline Wozniacki suffered a surprise fourth-round defeat by Germany's Andrea Petkovic in the Sony Ericsson Open on Monday, falling victim to a smart strategy from her......