Jamie Donaldson holds a three-shot lead heading into the final day of the Nedbank Golf Challenge after carding a round of 67 on day three.
The Welshman put in another impressive display in Sun City, South Africa to maintain the advantage he held at the end of the second round, holing six birdies during the course of Saturday.
Two under after the front nine, Donaldson stepped up his game for the remaining holes and could have been even further ahead had it not been for a bogey on the 17th.
The performance sees him move to 16 under par for the tournament and comfortably clear of closest rivals Ryan Moore and Thomas Bjorn, with the Dane having closed in on the leader by one stroke after producing a round of 66.
Donaldson believes he is taking on the best in the world and is hopeful of getting his hands on the trophy on day four.
"This is one of the best fields in the world and a three shot lead doesn't mean much," he is quoted as saying by the European Tour Website.
"I'm looking forward to the final round. It's going to be a tough day on a difficult course.
"I'm looking forward to tomorrow. I'll play as aggressively as I can and take on all the shots that I would if it was the first day. I have to go out there and play aggressive golf where I can.
"It would be very special to win. It's a great golf course and a great country. I've won twice on the European Tour so far, but every win is special. This would just be a little more special."
Thongchai Jaidee and Sergio Garcia came in at six under par as they refused to give up hope of claiming the title, while European number one Henrik Stenson lost ground by requiring 69 strokes to make it around the course.
Defending champion Martin Kaymer had a day to forget as his chances of retaining the title took a blow with a round of 74, leaving him tied for 14th and five under par overall.