Kunlavut Vitidsarn ended Viktor Axelsen's juggernaut to win the men's singles title while Young defeated Akane Yamaguchi in matches that went beyond an hour.
Sen won the opening game of the men's singles contest but Denmark's Rasmus Gemke fought back by engaging the Indian in long rallies to win 16-21, 21-15, 21-18 in the BWF World Tour Super 750 event, organised by the Badminton Association of India
Sen defeated Prannoy 21-14, 21-15 in the men's singles to settle his score against the World No 9 after he had suffered a defeat in the Malaysia Open earlier this month.