Tennis-Shanghai Masters men's singles quarterfinal results

Results from the Shanghai Masters Men's Singles Quarterfinal matches on Friday

Rafa Nadal (Spain) beat 8-Stanislas Wawrinka (Switzerland) 7-6(10) 6-1

Novak Djokovic (Serbia) beat Gael Monfils (France) 6-7(4) 6-2 6-4

Juan Martin Del Potro (Argentina) beat 15-Nicolas Almagro (Spain) 6-3 6-3

Jo-Wilfried Tsonga (France) beat Florian Mayer (Germany) 6-2 6-3