Defending champion Lakshya Sen's title defence lay in tatters after he suffered a narrow defeat against world No. 20 Rasmus Gemke of Denmark in a thrilling three-game match at the Yonex-Sunrise India Open Super 750 tournament here on Thursday. World No. 12 Sen squandered an opening game advantage to go down fighting 21-16, 15-21, 18-21 to Gemke in a second-round match that