In the Asian Badminton Championship, Saina Nehwal, Aditi Mutatkar advanced to the pre-quarterfinals of the women's singles, while P Kashyap kept the tri-colour fluttering in the men's singles event in New Delhi yesterday.Ace Indian mixed doubles pair of Jwala Gutta and V Diju also entered the pre-quarterfinals after beating Hong Kong duo of Wai Hong Wong and Hoi Wah Chau 21-13, 21-12.In the women's singles, top seed Saina crushed Porntip Buranaprasertsuk of Thailand 21-10, 21-13 in 24 minutes to set up a date with Julia Pei Xian Wong of Malaysia in the pre-quarters today.Aditi saw off Singaporean Mingtian Fu 21-11, 17-21, 21-18 in the first round to set up a clash with Chinese Taipei's Hsiao Huan Chen.In men's singles, Kashyap was the lone Indian standing after he won both his matches of the day to reach the last 16 stage.The Andra Pradesh lad defeated Hong Kong's Wing Ki Wong 21-14, 21-15 in the first match before beating Tommy Sugiarto of Indonesia 21-14, 21-16 in the next.