Third seed Saina Nehwal has entered into the quarterfinals of women's singles event at the All England Badminton Championships. She defeated South Korean Kim Hyo Min 21-15, 21-15 in Birmingham yesterday. Saina next faces Wang Yihan of China. However, top Indian women's doubles pair of Jwala Gutta and Ashwini Ponnappa crashed out of the prestigious event with a straight-game defeat against top seeded Chinese duo of Tian Qing and Zhao Yunlei in the second round.