Victor Dubuisson turned in 34 to open up a two-shot lead on day two of the Nedbank Golf Challenge hosted by Gary Player.
With high winds making scoring extremely difficult at Gary Player Country Club, the top of the leaderboard looked very different to how it had overnight, with many of the leading contenders heading in the wrong direction in the seventh Rolex Series event of the season.
Dubuisson was the man to take advantage as he continued his incredible record at this time of year which has given him two wins at the Turkish Airlines Open, two top fives here and three top fives at the DP World Tour Championship, Dubai in November and December since 2013.
The Frenchman moved to six under with defending champion Alex Noren and home favourites Darren Fichardt and Charl Schwartzel his closest challengers.
Dubuisson was still a shot behind overnight leader Bernd Wiesberger stood on the fourth tee but when the Austrian found a bunker off the tee and needed two attempts to exit it, he made a double-bogey.
A 15-footer on the same hole meant that Dubuisson held the lead on his own and when he holed a very long putt on the sixth, he was six under and two ahead.
With two further bogeys on the fifth and sixth from Wiesberger, it was Lee Westwood who initially emerged as the closest challenger as he turned in 34.
The 23-time European Tour winner bogeyed the first but birdied the third and fourth before dropping another shot on the sixth. A long putt on the eighth followed and when he took advantage of the par five ninth, he was four under.
A missed short putt on the 12th then dropped him into a large group of players at three under and Dubuisson held a three-shot lead.
That was soon cut to two by Swede Noren who had taken advantage of the par five second but double-bogeyed the next after having to take a drop. He then made six pars in a row turn in 37 but chipped-in on the tenth for an eagle for the second day in a row and he was four under.
Schwartrzel had been erratic off the tee on the front nine with a double-bogey after going miles left on the third cancelling out birdies on the second and fourth. He had made another bogey on the sixth but back-to-back birdies on the crucial par fives at the ninth and tenth moved him to four under.
Fichardt was the next man to join that group after only making the event as a late addition after the withdrawal of Anthony Wall.
He made the most of all the par fives, birdieing the second, ninth, tenth and 14th with a single bogey on the fifth.
Westwood and fellow Englishmen Tyrrell Hatton and Ross Fisher were at three under alongside Scotland's Scott Jamieson and Frenchman Mike Lorenzo-Vera.