The South African dominance of the Africa Open golf championship will be severely tested from Thursday with many leading local stars absent. Major champions Louis Oosthuizen and Charl Schwartzel and George Coetzee, Branden Grace and Richard Sterne miss out on the event in this Indian Ocean town. They are preparing for the World Golf Championship-Accenture Match Play Championship at Dove Mountain in Arizona next week along with United States-based compatriots Tim Clark and Ernie Els.