Meanwhile, reigning Commonwealth Games champion Parupalli Kashyap and rising kid on the block Kidambi Srikanth also came out on top in their respective men's singles pre-quarterfinals to enter the men's singles.

Beginning India's campaign on Thursday was two-time World Championship bronze medalist Sindhu who needed only 31 minutes to edge past Russia's Ksenia Polikarpova 21-17, 21-19 in their first ever match.

The World No.10 has a solid chance of reaching the last four as she will take on South Korean fourth seed Ji Hyun Sung next up against whom the Indian has a 3-0 lead in career meetings.

Later at the Odense Sports Park, Saina easily moved past old rival Minatsu Mitani of Japan 21-12, 21-10 in 38 minutes to take a 5-2 advantage in career meetings.

However, the Olympic bronze medalist faces a tough task next up against Chinese second seed Shixian Wang for a place in the semis. The Hyderabadi can take heart from the fact that she has a 5-3 lead in head-to-head over the Chinese, whom she beat the last time they played at the Australian Open in June.

Meanwhile in men's action, Srikanth defeated Chinese Taipei's Jen Hao Hsu 21-15, 21-12 in 45 minutes in their first career meeting and will next take on South Korean seventh seed Wan Ho Son.

Though Srikanth has a 2-1 lead in career meets, the Korean came out on top the last time the duo met at the Thomas Cup in New Delhi.

Recently crowned Commonwealth Games champion Kashyap, however, had a tough outing against Indonesian Dionysius Hayom Rumbaka. The Hyderabadi needed an hour and nine minutes to move past Rumbaka with a scoreline of 21-17, 17-21, 22-20 to level their head-to-head to 2-2.

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