Oosthuizen retains Champions title in Durban
File picture shows Louis Oosthuizen of South Africa teeing off at the second tee during the first round of the BMW Shanghai Masters at the Lake Malaren Golf Club in Shanghai on October 24, 2013
Oosthuizen started the day in fourth place, two shots adrift of overnight leader Tommy Fleetwood, but an eagle at the eighth at the Durban Country Club got him into contention.
He then birdied four of the last six holes to finish a shot clear of compatriot Branden Grace and two ahead of Dutchman Joost Luiten and Fleetwood.
The Englishman was undone by three bogeys in five holes on the front nine.
Oosthuizen, the 2010 British Open champion, has now won on the European Tour in five successive seasons.