No.2 seed Nadia Petrova beat young Canadian Eugenie Bouchard to reach the quarterfinals, 63 62.
Shahar Peer, the No.1 seed, cruised through her first two rounds. She posed with an Israeli fan.
In her first match since the quarterfinals of Wimbledon, Tamira Paszek rallied past Melanie Oudin.
Yaroslava Shvedova and Sania Mirza beat American pairs handily in their first two doubles matches.
Britain's Anne Keothavong and Heather Watson lost to the No.2 seeds in the doubles quarterfinals.
The only Top 4 seed to fall in the first two rounds was Jelena Dokic, at the hands of Zhang Shuai.
Jill Craybas, 37, pushed the world's No.2 teenager, Bojana Jovanovski, to three sets in the 16s.
Bojana Jovanovski, 19, completed a 64 57 64 win over Jill Craybas to reach the quarterfinals.
No.8 seed Alberta Brianti served up a 61 62 win over Varvara Lepchenko to reach the quarterfinals.
Former Top 20 player Virginie Razzano ousted No.6 seed Elena Baltacha to move into the final eight.
Virginie Razzano reached her first WTA quarterfinal since the passing of her fiance and coach.
Bojana Jovanovski took some time out during her Citi Open campaign for a VIP sponsor visit.
Melanie Oudin with a group from the USTA where ex-WTA player Katrina Adams was hosting a clinic.
Tamira Paszek, Austria's No.1 player by far, spoke to the press after her second round victory.
Shahar Peer is Israel's highest-ranked player at No.24. The next-highest is No.194 Julia Glushko.