Extra Time for 17 April 2015

This week, we discuss the burning issues in rugby union: rich offshore clubs luring All Blacks, who might be playing Sevens at the Olympics and concussion. We have a chat with Tyler Hamilton, one of the whistleblowers behind the exposure of disgraced cyclist Lance Armstrong and his doping. We talk hockey after the men's Black Sticks posted a rare win over Australia's Kookaburras, and we ask why diving is becoming a part of rugby league.