Grand Slam (rugby union) Grand Slam (rugby union) In rugby union, a Grand Slam (Irish: "Caithréim Mhór". Welsh: "Y Gamp Lawn". French: "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 39 times in total, for the first time by Wales in 1908, and most recently by Ireland in 2018. 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 –
1990 Five Nations Championship Grand Slam win, as they have yet to win a Grand Slam since Italy joined what became the Six Nations Championship in 2000. The teams involved were: 1990 Five Nations Championship The 1990 Five Nations Championship was the 61st series of the Five Nations Championship, an annual rugby union competition between the major Northern Hemisphere rugby union national teams. The tournament consisted of ten matches held between 16 January and 24 March 1990. The tournament was the 61st in its then format as the Five Nations. Including the competition's former incarnation as the Home Nations Championship, the 1990 Five Nations