BANGKOK – South Korea’s Kim Hyung-Sung took a one-shot first day lead at the Thailand Open in Pattaya on Thursday, with a flawless seven-under par 65 laying down a marker at the $1 million tournament. Making light of the sweltering temperatures, Kim hit four birdies on the front nine and three more as he headed back to the clubhouse to gave himself a narrow one stroke lead over local boy, Panuphol Pittayarat. Australian Joshua Younger sat one shot back overnight, after making a 67, and is nicely poised going into day two of the joint-sanctioned OneAsia and Japan Golf Tour Organisation event near the Thai resort city of Pattaya. Closest rival Panuphol, better known by his nickname ‘Coconut’, dropped a shot on the 18th to miss out on a share of the overnight lead.