Donald has not played since injuring his left wrist during the final round of the US Open in June and underwent surgery in August, ending his chances of making a third straight Ryder Cup appearance.

The 30-year-old replaces Anthony Kim in the 12-man field after the American withdrew with an ankle problem.

The £3million tournament will take place at the Gary Player Country Club in South Africa from December 4-7.

"November 3 was 12 weeks from my surgery and I began hitting full shots again that day," Donald said on www.rbssport.com.

"I started with full wedges and every day since then I've been building up club by club. There's no pain, no soreness and everything feels very good.

"I absolutely believe I'll be ready. I wouldn't have entered unless I thought I was going to be.

"It might take a bit of adjusting mentally after being out for five months, I've never had a break from competitive golf for that long before.

"But I'm sure when I get out there, the competitive juices will start flowing again."