Grand Slam (rugby union)

In rugby union, a Grand Slam (Irish: Caithréim Mhór. Welsh: Y Gamp Lawn. French: Le Grand Chelem) occurs when one team in the Six Nations Championship (or its Five Nations predecessor) manages to beat all the others during one year's competition. This has been achieved 37 times in total, for the first time by Wales in 1908, and most recently by England in 2016. The team to have won the most Grand Slams is England with 13.

In another context, a Grand Slam tour refers to a touring side – South Africa, Australia or New Zealand – which plays fixtures against all four home nations (England, Ireland, Scotland and Wales) during their tour. If the tourists then win all of those matches, they are said to have achieved a Grand Slam. This has been done nine times, first by South Africa in 1912–13, and most recently by New Zealand in 2010.

In the annual Six Nations Championship (among England, Ireland, Scotland, Wales, France and Italy), and its predecessor the Five Nations Championship (before Italy joined in 2000), a Grand Slam occurs when one team beats all of the others during one year's competition. The Grand Slam winners are awarded the Six Nations trophy (as tournament winners), but there is no special grand slam trophy – the Grand Slam is an informal honour recognizing a Championship-winning team which has won all their games.

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