Ace Indian shuttler Saina Nehwal has cruised into the quarter-finals of the women's badminton singles at the Asian Games. At Guangzhou , she defeated Lydia Cheah of Malaysia in the second round in straight games. The world number three Indian needed just 28 minutes to see off Lydia 21-15 21-17. She will next take on the winner of the match between Yip Pui Yin of Hong Kong and Chinese Taipei's Ma Hsiao Pai on Thursday.The second seed Indian held her serve for most of the time and scored points through her smashes in the first game. She was also better at the net. In the next game, Saina again raced to a comfortable 6-1 lead before moving to 20-11 but the Indian squandered six match points before closing the match.