Early charge puts Kim in front
Home player Kim Do-hoon was setting the on-course pace at four under par on day one of the Ballantine's Championship in Icheon, South Korea.
Kim made four birdies on the back nine, having started his round at the 10th, as he led Frenchman Victor Dubuisson by one stroke at Blackstone Golf Club. Dubuisson's eventful back nine featured five birdies and two bogeys.
A group at two under included four players who had completed their rounds, with England, Scotland and Wales all represented along with the home nation.
England's Mark Foster and Wales' Jamie Donaldson each mixed four birdies with two bogeys while Scot Richie Ramsay reached the same total despite a double-bogey seven at the fifth, his round of 70 featuring five birdies.
Three birdies were enough for Jung Ji-ho to complete the quartet while Jbe Kruger, Marcus Fraser, Prom Meesawat and Lee Dong-min were also two under with their rounds still in progress.
Australia's Adam Scott and Ireland's Paul McGinley both shot 71 as did Englishman Oliver Fisher, who started on the back nine and at one stage led outright at four under before a triple-bogey six at the third undermined his round. Paul Casey was one under having played the first 10 holes.