Lakshya Sen bowed out after losing to Japan’s Koki Watanabe 16-21, 14-21, while Ayush Shetty went down to Kunlavut Vitidsarn 19-21, 25-23, 15-21 as India endured a disappointing second day at the Japan Open Super 750 badminton tournament here on Wednesday. 

In the women’s section, Unnati Hooda lost to Huang Yu-Hsun 21-16, 16-21, 15-21.