In a South Africa side packed with giants, it is the 5ft 7in scrum-half who stands out. The Springboks' route to the World Cup final has been characterised by the grunt and guile of their hulking forwards and dominant physical displays. But directing the Bok brutes around the pitch in both attack and defence has been Faf de Klerk, the blond-locked, box-kicking number nine. So who is the scrum-half