India's top shuttler Saina Nehwal has romped into the pre-quarterfinals of the women's singles badminton event of the London Olympic Games. At the Wembley Arena in London last night, World Number Five Saina easily brushed aside the challenge of Belgium's Lianne Tan with a 21-4, 21-14 scoreline in her second Group 'E' match. The pair of Jwala Gutta and Ashwini Ponnappa also kept their hopes alive in the women's doubles. They stunned the world number 10 duo of Yu Chin Chien and Wen Hsing Cheng of Chinese Taipei 25-23, 16-21, 21-18 in a Group 'B' round robin match.