Indian shuttler Parupalli Kashyap progressed to the quarter-finals of the 2015 Japan Open Super Series after defeating third seed compatriot Kidambi Srikanth in straight sets in Tokyo on Thursday.
Reigning Commonwealth Games champion Kashyap overcame Srikanth 21-11, 21-19 in an all-Indian men's singles thrilling contest that lasted 45 minutes.
Although Kashyap clinched the opening set with ease, he had to overcome a spirited challenge from Srikanth in the next set to secure the win.
Kashyap will next face sixth seed Chou Tien Chen of Chinese Taipei on Friday.
Earlier in the day, world number one Saina Nehwal crashed out of the tournament after suffering a straight set defeat against unseeded Japanese Minatsu Mitani in the second round. The result means India's challenge in women's singles has come to an end.