BASEL, Switzerland, Aug. 21 (Xinhua) -- Fourth seed Chen Yufei of China beat Thailand's Pornpawee Chochuwong in straight sets to enter the women's singles last 16 at the World Badminton Championships here on Wednesday.
The All England champion fought off tenacious challenge in the second set from the 14th-ranked Chochuwong, winning 21-14, 21-19.
Her teammate Cai Yanyan was stopped by South Korea's Kim Ga-eun 21-14, 16-21, 21-10 in a later match, becoming the only Chinese player to be knocked out of round of 16.
Sixth seed He Bingjiao and 13th seed Han Yun both advanced on Tuesday with victories over Japan's Aya Ohori and Sayaka Takahashi respectively.
The 21-year-old Chen, who won the bronze in 2017 and was beaten in the quarterfinals last year, will next take on the winner between 11th seed Michelle Li of Canada and Malaysia's Soniia Cheah.
"I am not in top form today probably because it is my first match," Chen said. "I played too slowly at the beginning of the second set, which gave her many chances."
Chen is drawn to meet second seed Tai Tzu Ying of Chinese Taipei in the quarterfinal should both players win their next match.
Tai, whom Chen defeated in this year's All England Open final, meets Fitriani Fitriani of Indonesia later on Wednesday in her first match of the tournament.
