London: Indian women's doubles pair of Jwala Gutta and Ashwini Ponnappa today advanced to the quarterfinals in badminton event of the London Olympics after notching up a straight-game victory over Lei Yao and Shinta Mulia Sari of Singapore in their last group B match here.

The Commonwealth Games gold medallists saw off the world number 13 Singapore pair 21-16 21-15 in a 34-minute match at the Wembley Arena here.

The world No 20 Indian combo opened up a 11-5 lead in the first game and extended it to 18-10. The Singapore pair tried to come back and made it 19-14, before Jwala and Ashwini earned the game point. Yao and Sari saved a couple of game points but the Indian pair didn't make any more mistake and pocketed the first game comfortably. In the second game, the Indian pair surged ahead to a 9-1 lead and although their rivals scripted a fightback, Jwala and Ashwini staved off the challenge to comfortably seal the issue to reach the kncokout stage.