Nanjing (China): Taiwan's world No. 1 Tai Tzu-ying suffered a shock defeat at the hands of Chinese He Bingjiao in a thrilling quarterfinal clash at the BWF World Championships here on Friday.

Sixth seed He pulled off a hard-fought 21-18, 7-21, 21-13 win over the top seed to set up a semifinal date with Olympic champion Carolina Marin of Spain.

Tai came back strongly after losing the opening game narrowly. But she ran out of steam in the decider against the left-handed He.

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