BUSINESSDAY-Johannesburg — MEASURES have been put in place to ensure that foreign soccer stars who played in the Soccer World Cup will be taxed on their South African earnings, say tax analysts.This gives the South African Revenue Service (SARS), already one of the world's most efficient revenue services, a large cash pile to rifle through. SARS "recognises the challenge of collecting the tax on these earnings given the short period over which players will be present in SA," Di Seccombe, a senior tax specialist at audit, tax and advisory company Mazars, said at the weekend.