Championship at Leopard Creek on Saturday.
eight-under-par, two strokes ahead of England's Oliver Wilson and Spain's Rafael Cabrera Bello, and quickly gave notice that he would not be relinquishing control.
chip-in for eagle on the sixth.
Lee Westwood, who began the day three strokes back, briefly go second on seven-under-par.
and Welshman Mark Pilkington.
second place on nine-under, going seven-under-par through 15 after a three at the long second hole.
Wilson birdied the par-five second hole, but little else seven-under overall. He was joined by Pilkington, who was four-under through 13 holes.
World number seven Ernie Els, looking to defend his title, began the day on level-par, eight shots back, and shot a 69.
But three-under-par.
Els had five birdies and two bogeys in his round.
