Aug 18 (Infostrada Sports) - Results from the Cincinnati Open Women's Singles matches on Friday
Quarterfinal
4-Petra Kvitova(Czech Republic)beat 17-Anastasia Pavlyuchenkova(Russia)6-3 7-6(4)
9-Li Na(China)beat 1-Agnieszka Radwanska(Poland)6-1 6-1
5-Angelique Kerber(Germany)beat 2-Serena Williams(U.S.)6-4 6-4
Venus Williams(U.S.)beat 3-Samantha Stosur(Australia)6-2 6-7(2) 6-4
Round 3
9-Li Na(China)beat Johanna Larsson(Sweden)6-2 6-2
17-Anastasia Pavlyuchenkova(Russia)beat 6-Caroline Wozniacki(Denmark)6-4 6-4