Louis Oosthuizen has been ruled out for 14 days after having cortisone injections in his lower back.

Oosthuizen missed two months of action after withdrawing from the Open in July due to the long-standing problem and will be absent from next week’s Alfred Dunhill Championship at Leopard Creek after being advised to rest.

“I was really excited to play in the tournament so it is very disappointing to miss out,” said the 31-year-old South African, who has undergone the procedure to reduce pain and inflammation in the affected area.

“My back has been sore during the last few tournaments and it has been frustrating.  I’m hopeful the injections will free up the problem and enable it to go away completely.”

Oosthuizen, whose last victory came on home soil at the Volvo Golf Champions in January, aims to return at the Nedbank Golf Challenge in December.

Louis Oosthuizen forced out of Alfred Dunhill Championship with continuing back injury