Oosthuizen fends off challenge from compatriot van der Walt to win Africa Open
Louis Oosthuizen has won the Africa Open by two shots from fellow South African Tjaart van der Walt in East London
The two players shared the overnight lead, but a six-under-par round of 67 gave defending champion Oosthuizen the title.
The former Open champion birdied the par-three 17th, Van der Walt making bogey at the same hole, to settle the tussle.
Sealed with a kiss: Louis Oosthuizen won the Africa Open by two shots
Click here for the final leaderboard
Oosthuizen shot an eagle, six birdies and two bogeys today to finish with a four-round total of 25 under par.
Van der Walt started the final day impressively with birdies in his first three holes, but he picked up only two more birdies and a bogey to go round in 69.
Retief Goosen finished in third place, three shots off the lead on 24 under, after he also finished with a 69.
Second fiddle: Tjaart van der Walt couldn't catch his compatriot
Goosen carded a birdie and an eagle in his opening three holes, but his challenge faded and he picked up just two more birdies and a bogey.
A fourth South African, Jaco van Zyl, finished fourth on 23 under, while Scotland's Alastair Forsyth was fifth one shot further back after a closing round of 67.
England's Danny Willett could only manage a 73 to lie seventh on 19 under.
Hats off: Oosthuizen celebrates his hard-fought victory
Oosthuizen admitted he knew his final-round battle with Van der Walt would not be an easy one.
'It was a real dogfight for most of the day,' Oosthuizen said.
'I remember watching Tjaart when I was an amateur, and it was just great seeing him play to his potential today.
'He played really well. He's one of those who won't go away. He's not going to mess it up – he's too consistent for that.'