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 Wales in 2019. The team to have won the most Grand Slams is England with 13.