The Olympic bronze medalist went down to the eighth seeded Thai player 15-21, 19-21 at the National Indoor Arena. Nehwal had stormed into the last four of the prestigious tournament after beating former World No. 1 Shixian wang of China in a thrilling three-game match on Friday.
The only Indians to win the title are Prakash Padukone (1980) and Pullela Gopichand (2001). the 22-year-old Nehwal also lost in the semifinal of the UDS 400,000 Super Series event in the 2010 edition.