At the Thomas Cup badminton tournament in Kunshun, China, today, Indian men's team suffered a 1-3 loss against Thailand in their campaign-opener. India lost one Singles and two Doubles matches to give Thailand an unassailable 3-1 lead in the best of five Tie. The lead made the fifth match between Sourabh Varma and Adulrach Namkul inconsequential.India's lone success came through Sai Praneeth B, when he notched up a 21-11, 21-16 win against Khosit Phetpradab in 36 minutes. India will next take on Hong Kong on Tuesday.