Sir Steve Hansen: Ex-All Blacks coach on what made Sam Whitelock so great

Sir Steve Hansen - legendary All Blacks coach who was part of two Rugby World Cup-winning campaigns with the New Zealand men - joins Martin Devlin on It's Only Sport, to talk all about Sam Whitelock's glamorous career in the black jumper. The 153-test lock has officially called time on his rugby career - he hung up his Kiwi rugby boots after last year's World Cup, which preceded a short playing stint in France. Sir Steve chats to Devlin about what made Whitelock a special player, the history of athletes from rural New Zealand towns turning into great All Blacks (Whitelock, Richie McCaw, Dan Carter for example), and much more.