Clarke seeks 2011 kick-start in Africa
The 42-year-old is part of a strong field assembled in East London, with high-profile South African trio Charl Schwartzel, Louis Oosthuizen and Retief Goosen also competing for the €158,500 top prize.
Clarke is currently on a two-year winless streak having last tasted success at the 2008 KLM Open, but there has been plenty of promise over the last two seasons.