Saina Nehwal has entered the quarter-finals of the Wilson Swiss Open Super Series badminton tournament in Switzerland. In a thrilling second round match last night, she beat All England finalist Eriko Hirose of Japan by 2 games to one – 21-15 17-21 21-11. Saina had lost to the Japanese player in the quarterfinals of the All England Championships last week. Saina will clash with sixth seed Bulgarian Petya Nedelcheva in the quarterfinals. Nedelcheva defeated qualifier Karin Schnaase of Germany 21-12, 21-11 last night.