South African Louis Oosthuizen has birdied his closing two holes to retain the Volvo Champions title.

The former British Open winner shot a 4-under 68 Sunday for an overall score of 12 under.

He finished a stroke ahead of fellow South African Branden Grace who also shot a 68 on the Durban Country Club course.

It is Oosthuizen's first success since winning this elite 36-player event a year ago.