Chinnarat Phadungsil of Thailand made eight birdies on the back nine Thursday to shoot an 11-under 61 for a five-stroke lead in the first round of the Avantha Masters.
He missed a long putt on the 17th that would have made it nine consecutive birdies for the former world junior champion. He is the youngest winner on the Asian Tour after capturing the Double A International tournament in 2005 at 17.
The leader was followed by a group of five at 6 under, including compatriots Chapchai Nirat and Chawalit Plaphol. Colin Montgomerie had a 76 and is tied for 148th.