| Russia's Maria Sharapova, unseeded, was forced 
				to retire with a right shoulder injury before her match against 
				third-seeded countrymate Daria Kasatkina.
 Kvitova, of the Czech Republic, will play No. 8 seed Donna Vekic 
				of Croatia in the quarterfinals. Vekic beat lucky loser Veronika 
				Kudermetova of Russia 6-4, 6-3 in the night's final match.
 
 In other action, Russia's Vera Zvonareva stunned fifth-seeded 
				Julia Goerges of Germany 4-6, 6-4, 6-4, and Russia's Ekaterina 
				Alexandrova knocked off Great Britain's Katie Boulter 7-5, 4-6, 
				6-1.
 
 Thailand Open
 
 Top-seeded Garbine Muguruza of Spain is into the quarterfinals 
				after a 6-3, 7-5 win over Germany's Mona Barthel in Hua Hin.
 
 Muguruza trailed 0-4 in the second set before rallying to seal 
				the match.
 
 In other action, No. 4 seed Saisai Zheng of China cruised past 
				Romania's Irina-Camelia Begu 6-2, 6-4; No. 6 seed Ajla 
				Tomljanovic of Australia heated up late in beating Ukraine's 
				Kateryna Kozlova 7-6 (0), 6-1; and No. 8 seed Dayana Yastremska, 
				also from Ukraine, beat China's Peng Shuai 6-1, 6-4.
 
 --Field Level Media
 
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