The 26-year-old golfer from the USA was set to be one of the highest ranked players in the world to compete is 'Africa's Major'.

The world number seven has however been battling with a back injury of late and has decided to pull out of the tournament.

He will now be targeting Tiger Woods' Hero World Tournament in December to make his return from injury.

Just last week the European Ryder Cup captain for next year's event in Italy, Luke Donald, was confirmed in the field for what will be his third appearance at the prestigious tournament.

The 40th edition of the Million Dollar tournament at the Gary Player Country Club will be played from 10 to 13 December.

Morgan Piek OFM Sport