US Open champion Rory McIlroy is tied for the lead with four other players at the Kolon Korea Open after the second round.
The Northern Irishman shot a two-under 69 to add to his 68 from Thursday to join first-round leaders YE Yang and Rickie Fowler atop the leaderboard while Australian Bronson La'Cassie and Joong-Kyung Mo are also on five-under par.
McIlroy, 22, went out in two-under and made three birdies on the back nine but this was undone by three bogeys in four holes from the 13th.
Home favourite Yang, the 2009 USPGA champion, is the defending champion at the Woo Jeong Hills Country Club.
