India's shuttle queen and London Olympics Bronze medalist Saina Nehwal today waltzed into the Women's Singles quarterfinals of the season-opening Korea Open Badminton tournament at Seoul. In her pre-quarterfinal match, third seed Saina defeated Mingtian Fu of Singapore in straight games, 21-16, 21-9 to storm into the last eight stage. Saina will next play Li Han of China for a place in the semi-finals.However, another Indian shuttler PV Sindhu crashed out of the tournament, after losing to P. Buranaprasertsuk of Thailand, 19-21, 13-21 in her Women's Singles pre-quarterfinal fixture.In the Men's Singles, London Olympic quarterfinalist P. Kashyap also bowed out of the competition, as he lost to seventh seed Yun Hu of Hong Kong, 21-16, 13-21, 17-21.