The big-hitting Chapchai maintained his dazzling form at the Classic Golf Resort to head the field with a 20-under-par 124 aggregate after two rounds, bettering the previous 36-hole record by three strokes.

Chasing his third victory on the Asian Tour, the 25-year-old sank 11 birdies and dropped his first bogey of the tournament as he equalled the course record he set in Wednesday's first round.

New Zealand's Mark Purser maintained the birdie blitz at the Classic course by carding a 63 to trail by four strokes in the 300,000-dollar event, which is celebrating its second edition.

The Asian Tour rookie rolled in nine birdies for an unblemished card.

Wisut Artjanawat, one of Thailand's up-and-coming players, fired a 64 to lie a stroke further back on 129 while talented Indian Gaganjeet Bhullar, who secured his first professional victory in a domestic Indian event last week, returned a 64 as well to lie in fourth place, seven shots off the pace.

The cut was set at 140 with 67 players qualifying for the final two rounds, including pre-tournament favourite Jyoti Randhawa, of India, who shot a 69 for tied 53rd position. -- AFP