The 2015 Championship was a shorter competition than normal, with each team playing each other once, rather than twice (home and away). This was so that teams had a longer preparation time ahead of the 2015 Rugby World Cup which started on 18 September. However, New Zealand hosted an additional match against Australia in Auckland on 15 August which acted as the second Bledisloe Cup test and as a World Cup warm-up. Argentina hosted a second match against South Africa on the same date.
