World No.1 Justine Henin defeated Serena Williams in straight sets on Tuesday to join No.2 Maria Sharapova and Serbian stars Jelena Jankovic and Ana Ivanovic in the semifinals of Roland Garros.
Doubles No.1 seeds Lisa Raymond and Samantha Stosur were on top form during their quarterfinal victory over Anabel Medina Garrigues and Virginia Ruano Pascual at Roland Garros on Tuesday