■By NEALE HARVEY

Boks prop star: Vincent Koch is back in Springbok reckoning under Rassie Erasmus
PICTURE: Getty Images

VINCENT Koch has warned Grand Slam winners Wales not to relax after their Six Nations exploits, promising South Africa will be at their best to meet the World Cup challenge.
Wales have emerged as the Northern Hemisphere’s biggest threat ahead of this autumn’s global gathering in Japan.
However, Saracens prop Koch, who was recalled to Springbok colours last October, believes the Rainbow Nation are building towards a third title.
“Hopefully, I can ...