Every winter, the cream of the northern hemisphere's rugby crop faces off for the right to call themselves champions, with Six Nations fixtures fought out on battlegrounds between Dublin and Rome.
Unsurprisingly, six countries make up the Six Nations tournament: England, France, Ireland, Italy, Scotland and Wales, with the Italians joining the old Five Nations competition in 2000.
Although the tournament is more sprint than a marathon, with just five match days taking place across the early months of the year, just 13 teams have completed perfect campaigns - known as a Grand Slam - across the course of the 21st Century, a true testament to the strength of competition on offer.
From that first expanded tournament to kick off the millennium to Ireland's recent dominance of their neighbouring rivals, here is every Six Nations champion.
2000 - England
2001 - England
2002 - France - Grand Slam
2003 - England - Grand Slam
2004 - France - Grand Slamย
2005 - Wales - Grand Slam
2006 - France
2007 - France
2008 - Wales - Grand Slam
2009 - Ireland - Grand Slam
2010 - France - Grand Slam
2011 - England
2012 - Wales - Grand Slam
2013 - Wales
2014 - Irelandย
2015 - Ireland
2016 - England - Grand Slam
2017 - England
2018 - Ireland - Grand Slam
2019 - Wales - Grand Slam
2020 - England
2021 - Wales
2022 - France - Grand Slam
2023 - Ireland - Grand Slam
