Jakarta:Thailand's Chawalit Plaphol took a one-shot lead after Thursday's play at the Indonesia Open with a bogey-free six-under-par 65. Defending champion Simon Dyson opened with a disappointing one-under 70, which included three birdies and two bogeys. After missing the cut at last week's Malaysian Open, Shiv Kapur registered a much better performance. The Indian hit five birdies before dropping a shot at his penultimate hole, pushing him down to joint third spot. Good form Mikka Ilonen continued his good form. After finishing tied for seventh place in Malaysia, the 27-year-old Finn closed with four birdies on the homeward stretch for a round of 66. However, the round of the day though went to Plaphol. A winner at the Japan Tour's ANA Open in 2004 and the Asian Tour's Bangkok Airways Open last year, Plaphol put himself into contention for a first European Tour title with a sparkling 65. Rain and lightning then disrupted the play, leaving 36 players still to finish their first rounds. These included Park Jun-won. The South Korean was four-under-par through 12 holes, in a tie for third place with Denmark's Mads Vibe-Hastrup and Shiv Kapur.