Kim Kyung-tae closed in on a second Maekyung Open title after taking a six shot lead heading into Sunday's final round.
Kim carded a six-under-par 66 at a sun-drenched Namseoul Golf & Country Club in Korea on Saturday to take a firm grip on the trophy.
The 2007 champion, who also finished runner-up to Kim Dae-hyun last year, had five birdies and a superb 20 foot eagle putt to improve to 15-under-par overall after extending his two shot overnight lead.
The world No.37 dropped his only shot of the day on the final green with Korean compatriot Cho Min-gyu heading the chasing pack after a second consecutive 70 and defending champion Kim Dae-hyun a further shot off the pace after a bogey-free 69.
"It rained at the start of the day so that meant the grass was wet and I decided which holes I would be aggressive on and I was able to make good scores on those holes," Kim said.
"I am in a great position to win so I am very satisfied. It was a disappointing way to finish, but overall it was a very good day."
"I will continue to play aggressively even though I am six shots clear. If I do not try and make birdies, my lead could disappear quickly."
"I will again target which holes I can score on and try and scores on those holes again."
Kim reeled off three consecutive birdies in the middle of the back nine on Saturday before holing from off the green at the 16th for an eagle.
But the 24-year-old's round ended in dramatic style as his par putt on the final green agonisingly stopped on the edge of the hole.
After waiting the maximum 10 seconds for the ball to drop, he was forced to tap in for just a fourth dropped shot in three rounds.
"Kim Dae-hyun is a long driver, but I will still look to play my own style. He will have an advantage on the longer holes, but I will continue to play my own style," the tournament leader said.
After beginning the week with a bogey-free 67, Cho Min-gyu closed his third round with two late birdies to earn a place in Sunday's final group.
"I am very satisfied with my score. I am six shots behind, but I will just try and play my own game in the final round and not think about the score," said Cho.
Big-hitting Kim Dae-hyun coasted to a four shot victory last year after posting back-to-back rounds of 66 over the weekend, but the 23-year-old is well aware of the task he faces to claim a second green jacket this year.
"I think the gap is too much, but I will still try and play aggressively and not think about the gap," he said.
"Kim Kyung-tae played very well last year because he has played this course many times before, but I had a bit of luck and I was able to win."
"But this year, I think I do not have a chance to win as the gap is too great. I will just go out and play, but it will be very difficult."
David McKenzie matched Kim Kyung-tae's eagle at the 16th and three additional birdies handed the Australian a bogey-free third round 66 and a share of fourth.