At the Asian Badminton Championships in New Delhi, top seed Saina Nehwal and Aditi Mutatkar have advanced to the quarter-finals of the women's singles. World Number Six Saina lived up to her top billing in the tournament with a convincing 21-14, 21-16 win over Malaysian Julia Pei Xian Wong in just 27 minutes.Joining Saina in the quarter-finals was Pune girl Aditi who came up trumps against Hsiao Huan Chen of Chinese Taipei 23-21, 21-11.