Ace Indian shuttler Saina Nehwal has cruised into the quarter-finals of the women's singles at the Asian Games badminton competition. At Guangzhou today, the world number three needed just 28 minutes to defeat Lydia Cheah of Malaysia in straight games 21-15, 21-17. Saina will next take on the winner of the match between Yip Pui Yin of Hong Kong and Chinese Taipei's Ma Hsiao Pai in the last eight stage on Thursday.