Rory McIlroy dropped 10 shots off the pace Saturday at the Kolon Korean Open after a 4-over-par 75 that included just one biride.
McIlroy, 24, ranked sixth in the world and playing in a field comprised of mostly OneAsia Tour players, is tied for 13th.
Kim Hyung-tae will take a four-shot lead into the final round after a 5-under-par 66 at Woo Jeong Hills Country Club near Seoul. Kim captured the Korean PGA Championship earlier this year, one of five titles on the domestic tour.
McIlroy, who began the 2013 season ranked No. 1 in the world, has not won this year and is looking to regain some form in a six-tournament stretch through early December.
"Last time here (in 2011) I shot 64 in the last round so it would need something probably similar or a little better to have a chance,'' McIlroy said according to a OneAsia Tour report. "A frustrating day because I was in contention after two days, and if you shoot a solid score today you're right in there. I've just got to go out there tomorrow and shoot the best score that I can.''