Justin Marshall - former All Blacks halfback and renowned rugby commentator - joins Brendan Telfer on It's Only Sport, offering his thoughts on the All Blacks 36-man squad named for the Rugby Championship, as well as the men's and women's sevens tournaments at the Olympic Games. Marshall also touches on whether or not New Zealand Rugby should pour more resources into the men's Kiwi sevens team at the Olympics and allow star All Blacks to play for them.