Victory for Jwala Gutta and Ashwini Ponappa in the doubles capped of a brilliant day for the Indian badminton contingent at the London Olympics on Monday. Fourth seed Saina Nehwal made her way to the pre-quarters singles with a straight sets victory over unseeded Belgian Lianne Tan. The world no.5 won 21-4, 21-14 in just 24 minutes in the group E match at the Wembley Arena. It was easy going for the Indian in the first game, while complacency got the better of her in the second as Tan, ranked 45, made a valiant effort. Saina will play the winner of Group F for a place in the quarterfinals.