Australian surfer Joel Parkinson has been forced to withdraw from this month's ASP World Tour event in South Africa after injuring his foot while surfing at Snapper Rocks on the Gold Coast on Friday morning. Parkinson was helped from the surf by former world champion Andy Irons and taken to hospital after badly cutting his heel on a surfboard fin. Currently eighth in the world rankings, Parkinson is the defending champion at the Jeffreys Bay event.