Justin Marshall - former All Blacks halfback with 81 test caps to his name, and now one of the most respected rugby commentators around the world - joins Martin Devlin on It's Only Sport, to further unpack New Zealand's surprise 38-30 defeat to Argentina in Wellington. It was the third time the All Blacks had lost a test to the Pumas, with all three coming within the last four years. Marshall and Devlin delve into specifics around the All Black performance including set piece, lineout and taking advantage of attacking opportunities. They also cast an eye over the Springboks' 33-7 thumping of the Wallabies in Brisbane.