Hansen took the All Blacks to Samoa for the first ever official test match, where the All Blacks won the match 25–16. In a shortened Rugby Championship, the All Blacks failed to retain the title they held for three years. Having beaten Argentina 39–18 and South Africa 27–20, a final match against Australia would see either New Zealand or Australia claim the Championship. For the first time since 2011, Australia beat the All Blacks 27–19. During the 2015 Rugby World Cup, despite some error ridden games in the Pool stage, Hansen led the All Blacks to the top off Pool C with victories over Argentina, 26–16, Namibia 58–14, Georgia 43–10 and Tonga 47–9, before beating France in the quarter-final 62–13 and South Africa 20–18 in the semi-final. They faced Australia in the final, winning 34–17 to become the first team ever to retain the Webb Ellis Cup. He also led the All Blacks to their first ever foreign Rugby World Cup victory. They also became the second team to win on British soil with Australia having won both previous tournaments in 1991 and 1999.