The South African fired a five - under - par 67 to lead on nine under par by a stroke from Thailand 's Thongchai Jaidee .
The South African also led this event after three rounds in 1998 .
The South African , who also led this event after three rounds in 1998 , fired a five - under - par 67 to lead on nine under par by a stroke from Thailand 's Thongchai Jaidee .