Jamie Donaldson has maintained his three-shot lead at the Nedbank Golf Challenge in Sun City.
The 38-year-old carded a five-under 67 on Saturday to retain his advantage at the end of the third round.
Donaldson was the overnight leader after the second round of Friday and maintained his good form throughout Saturday, stringing together six birdies.
"I'm looking forward to the final round," BBC Sport quotes him as saying.
"It will be a tough day on a difficult golf course. And this is one of the best fields in the world. A three-shot lead doesn't mean much here.
"I will continue to play as aggressive as I can. I have to, because somebody can come out and birdie the first three holes and I make par and suddenly there is no lead."
Denmark's Thomas Bjorn is three shots behind Donaldson, while Ryan Moore of the USA is a further shot back in fourth.
Sergio Garcia of Spain is tied for fourth place with Henrik Stenson (69).
