After the high of last week's Chinese Taipei Open triumph, ace Indian shuttler Saina Nehwal [Images] hit a low as she crashed out of the Japan [Images] Super series Badminton tournament with a straight-game defeat in the first round in Tokyo on Wednesday.

The Beijing [Images] Olympics [Images] quarterfinalist lost 18-21, 16-21 to seventh seed Hong Kong's Mi Zhou in a 30-minute contest. 

Zhou will take on local favourite Megumi Taruno, outplayed Canada's [Images] Charmaine Reid 21-8, 21-9.

Saina had clinched the prestigious Grand Prix Gold event in Chinese Taipei last week after a fine Olympic debut, in which she beat some higher ranked opponents en route to the quarterfinals.