In the women's draw, China's fourth seed Chen Yufei scored nine points in a row in the deciding set to beat Mia Blichfeldt of Denmark.

Chen, who finished third in the 2017 worlds, was 15-12 behind in the third set after she had won the first 21-17 but lost the second 18-21.

Chen's compatriot He Bingjiao, who won a bronze last year, was crushed by Japan's third seed Nozomi Okuhara 21-7, 21-18.

Chen will next face fifth seed Sinduhu V. Pusarla of India, who won the silver medal at the last two world championships and the Rio Olympic Games.

Pusarla beat second seed Tai Tzu Ying of Chinese Taipei 12-21, 23-21, 21-19 to book her spot in the last four.

The other women's semifinal clash will be held between Okuhara and seventh seed Ratchanok Intanon of Thailand, who ended Singaporean teenager Yeo Jia Min's giant killing run 21-17, 21-11.

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