Another seed exited the Japan Women’s Open on Thursday as Zarina Diyas went down in straight sets to Magda Linette.
Second seed Diyas was the highest-ranked player in the competition following Carla Suarez Navarro’s first-round exit earlier in the week.
However, the Kazakh was well beaten by Linette, who carved out 11 break-point opportunities in the first set alone en route to a 6-2 7-5 success in Tokyo.
Diyas’ defeat means only three of the event’s quarter-finalists are seeded – Madison Brengle, Ajla Tomljanovic and Christina McHale.
Linette will face Hsieh Su-wei in the last eight after the Taiwanese recorded a 6-2 6-4 victory over Kurumi Nara, the last remaining Japanese player in the draw.
Zheng Saisai overcame a late wobble to beat Irina Falconi 6-4 6-2 – having served for the match at 5-0 in the second set – and book a meeting with sixth seed McHale.
The conqueror of Suarez Navarro, Kateryna Bondarenko, got past Jarmila Gajdosova in three sets and will face Yanina Wickmayer next.