Mutua Madrid Open,  Quartelfinals , Friday

Central court (start at 11:00.) 

1. Maria Sharapova - Svetlana Kuznetsova 

2. Serena Williams - Petra Kvitova (not before 13:00.) 

3. Grigor Dimitrov - Rafael Nadal (not before 15:30.) 

4. Tomas Berdych - John Isner 

5. Murray or Granollers - Raonic or Mayery(not before 20:00.) 

6. Nishikori or Bautista - David Ferrer