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 again by Wales in
2012. The team to have won the most Grand Slams is
England with 12.