Sihwan Kim in front at weather affected Stableford Challenge

The American, who won The International Series Thailand last month, shot a first round 10-under-par 62 at Siam Country Club’s Waterside Course, in what is the Asian Tour’s first Modified Stableford scoring event.

The US$750,000 tournament is also being co-sanctioned with the Ladies European Tour.

The hooter to halt play for the day sounded as Kim was making his closing putt, during a long day disrupted by a two-hour weather delay in the morning.

“It was one of those rounds where you just look at a putt and it goes in,” said Kim, buzzing after also making birdie on 15, 16 and 17 before his grandstand finish.

“I didn’t really hit that well off the tee, I probably hit two fairways on the back nine today, but I was seven-under, so I just don’t know.

“I didn’t know what the line was, it was too dark to see. I just knew it was going a…