The intensity of scrum training at Springbok sessions are tougher than match conditions, says Zach Porthen, who is set to earn his fourth Test cap off the bench against England on Saturday

Young Bok prop Zach Porthen is learning every day in the Springbok camp.

The intensity of scrum training at Springbok sessions are tougher than match conditions, says Zach Porthen, who is set to earn his fourth Test cap off the bench against England on…