India, July 28 -- Reigning World Champion P.V. Sindhu advanced to the pre-quarterfinals of Women's Singles Badminton event at the Tokyo Olympics after beating Hong Kong's N.Y. Cheung in a Group J match on Wednesday.

The 26-year-old Indian, who had claimed a silver medal in the last edition in Rio, prevailed over World No. 34 Cheung 21-9 21-16 in a 35-minute match to top the group. This was Sindhu's sixth win over Cheung in as many meetings.

World No. 7 Sindhu will meet Denmark's World No. 12 Mia Blichfeldt, who topped Group I. Sindhu has a 4-1 head-to-head record against Blichfeldt, whose only win against the Indian was at the Yonex Thailand Open earlier this year.

The shuttler from Hyderabad, seeded sixth, had defeated Ksenia Polikarp...