World Championships: Sindhu knocks out defending champion

Indian shuttler P.V. Sindhu caused the biggest upset of the tournament so far by knocking out defending champion Yihan Wang of China to advance to the women's singles quarterfinals at the World Badminton Championships here Thursday.

The 10th seeded Sindhu defeated the second seeded London Olympics silver medallist 21-18, 23-21 in 55 minutes at the Tianhe Indoor Stadium.