The South African, who finished the tournament with a 16-under 276, sank a 12-footer on the 18th to dash the hopes of England's Chris Wood and Spaniard Manuel Quiros.

It was Oosthuizens first victory since the British Open at St. Andrews in July.

Oosthuizen said he was “quite ecstatic” to have won his first European Tour title in South Africa.

Defending champion Charl Schwartzel of South Africa posted a final-round 70 to finish joint second alongside countryman Jaco van Zyl and Steven OHara of Scotland on 15 under.