The South African last week claimed the Alfred Dunhill Championship at Leopard Creek for his first tournament success in five years, and he repeated the feat six days later on Sunday with a 17 under-par score, two ahead of England's Laurie Canter.

2010 Open Champion Oosthuizen, who'd never before achieved back-to-back wins, started his final round with a one-shot lead but bogeys on the 4th and 5th holes left him two-over for the round early on.

But the 41-year-old regained his rhythm and managed six birdies, including on the par-5 last hole, to finish in style.

"Coming here it felt like a bit of a home play because I was co-designer on the course, but the last two weeks have been really special and I hope I can repeat it in the future," Oosthuizen said.

"The golf course was fresh and new, but still had its teeth and showed a lot of good holes out there. To get it ready for the tournament was an unbelievable effort by everyone."

A trio of players finished on 14-under in joint third, including Swede Sebastian Soderberg, who carded a masterful 63 on Sunday to roar into contention late on.

He started his final round with a bogey, but recorded 10 birdies over the next 17 holes.

South African Jacques de Villiers (71) and Daniel Brown (65) from England shared third spot with Soderberg.

Andrew Martin, the lone Australian to make the cut, finished at two-over for the tournament, tied for 59th, after a final-round 74.