Brodie Retallick: ABs' 'slick' build-up to Springboks test & the challenge that awaits

All Blacks centurion and one of our greatest locks, Brodie Retallick, joins Martin Devlin on It's Only Sport, after being named to start in this weekend's Rugby Championship test against the Springboks in Auckland. Retallick missed last week's match against Argentina. He and Marty discuss the excitement leading into the match, how clean and crisp All Blacks training has been this week, the physical threat South Africa pose, and more.