DOUBLE Olympic champion Michael Johnson and world 100m gold medallist Marion Jones are confirmed to compete at two international athletics meetings in South Africa next month. Johnson, who set the world 200m record at the 1996 Atlanta Olympics, and Jones will compete at a meeting in Roodepoort near Johannesburg on March 13 and then in Cape Town on March 26. Jones, who will attempt four gold medals at next year’s Sydney Olympics, clocked the second fastest times ever over 100 and 200m at last year’s World Cup in Johannesburg.