France, and earned the nickname “the Invincibles”. In 1956, the All Blacks won a Test series against South Africa for the first time. The Springboks were the All Blacks’ greatest traditional rivals and had delivered some of the All Blacks’ worst defeats. In 1978, the All Blacks achieved a Grand Slam for the first time. For southern hemisphere sides like New Zealand, a Grand Slam includes victories over the four Home Unions – England, Ireland, Scotland and Wales – in the course of a single tour. The team achieved a second Grand Slam in 2005 and a third in 2008 In 1987, the All Blacks won the inaugural Rugby World Cup against France, hosted by New Zealand and Australia. New Zealand also won the Rugby World Cup Finals in 2011, after an 8–7 victory over France in front of a home crowd, and in 34–17 victory over Australia at Twickenham in 2015. The latter win made the All Blacks the first side ever to successfully defend a Rugby World Cup title and to win three World Cups. Professional era In 1995, following the Rugby World Cup tournament in South Africa, international rugby turned professional with the IRB's repeal of all amateurism regulations. For the first time, the NZRU negotiated with and contracted New Zealand rugby players. The NZRU also joined with the national unions of Australia and South Africa to form SANZAR, which sold the television rights for major southern hemisphere rugby competitions and helped to build the commercial foundation on which professional rugby is based. SANZAR, renamed SANZAAR with the 2016 entry of Argentina as a full member of the body, remains an important rugby organisation and organises The Rugby Championship (originally the Tri Nations) and the Super Rugby competition. National teams The NZRU has several teams under its control. Men All Blacks – the national men's rugby union team of New Zealand Sevens – the national rugby sevens team of New Zealand. Established in 1983, when the first full international side was sent to the Hong Kong Sevens tournament. Māori All Blacks – the national men's Māori team of New Zealand. Members of this team must have at least 1/16 Māori ancestry (equivalent to one great-great-grandparent). Under 20s – an age graded side created after World Rugby (then known as the IRB) folded its former under-19 and under-21 World Championships into an under-20 competition currently known as the