DOHA: Third seed Dominika Cibulkova, Zhang Shuai and Monica Puig reached the quarterfinals of Qatar ExxonMobil Open on another rain-affected day at the Khalifa International Tennis Complex here on Wednesday.
Spain's Garbine Muguruza, the number five seed, was the biggest casualty of the day, losing to Zhang while top seed Anqelique Kerber was still waiting to play her first match.
The continual rain means that the German faces the prospect of playing two matches on Thursday if she wins her second round tie against Daria Kasatkina of Russia.
Also playing on Thursday will be great friends Agnieszka Radwanska, the number four seed, and Denmark's Caroline Wozniacki in a last 16 clash.
Of the few matches that were completed, Cibulkova's clash against Russia's Anastasia Pavlyuchenkova was the pick.
The Slovakian won in three sets, 7-5, 2-6, 6-2 and admitted afterwards it had been a hard match.
"I knew it's going to be a tough one, especially now," said Cibulkova. "She's in great form. She played quarter-finals in Australian Open.
"When she's in good form, it's going to be really tough."
Mónica Puig (PUR) bt Yulia Putintseva (KAZ) 6-2, 4-6, 2-1 - retired
Dominika Cibulkova (SVK x3) bt Anastasia Pavlyuchenkova (RUS) 7-5, 2-6, 6-2
Shuai Zhang (CHN) bt Garbiñe Muguruza (ESP x5) 7-6 (7/3), 3-6, 7-5
Darya Kasatkina (RUS) bt Irina Begu (ROM) 3-6, 6-1, 7-5
Mónica Puig (PUR) bt Laura Siegemund (GER) 6-0, 6-1
Yulia Putintseva (KAZ) bt Timea Bacsinszky (SUI x7) 6-1 - retired
Caroline Wozniacki (DEN) bt Kiki Bertens (NED) 6-2, 6-3
Lauren Davis (USA) bt Roberta Vinci (ITA) 6-2, 6-3
Elena Vesnina (RUS x6) bt Christina McHale (USA) 5-7, 6-3, 7-6 (9/7)
Barbora Strýcová (CZE x8) bt Fatma Al Nabhani (OMA) 6-3, 6-0
Garbiñe Muguruza (ESP x5) bt Çagla Büyükakçay (TUR) 6-3, 6-2
Shuai Zhang (CHN) bt Tímea Babos (HUN) 7-6 (7/3), 6-3
Caroline Garcia (FRA) bt Madison Brengle (USA) 6-2, 4-6, 6-3