Defending champion Louis Oosthuizen has retained his title at the Volvo Golf Champions event in his native South Africa after shooting a final-round 68 for a 12-under-par total.

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 and has started the season with a win on home soil for the fourth year running.

“It’s great in front of the home crowd to get my first win of the season and hopefully I can build on this and get a few more,” he said.

“I felt really comfortable today, especially on the back nine. Once I stood over my second on 17, I saw Branden had made birdie on 18 and I knew it was crucial for me to get within 10 feet to give myself a proper birdie opportunity and I hit it really close.

“At 18, I just wanted to get it past the pin to chip back into that green. I got that right and hit a really a good shot.”

Grace was left to rue a first-round of 74 which left him with a lot of catching up to do, although he came mighty close after a final-day 68 which featured just one bogey.

“I thought I played some superb golf today. I let a couple slip out there which was unfortunate but if you had told me my first event I would start off with a second place, I would have taken it,” he said.

Meanwhile, it was also a good day for Irishman Padraig Harrington, who has not won on the European Tour since his 2008 US PGA triumph, but who shot a 67 to finish tied fifth.