The penultimate round of the championship: Scotland v Ireland opens proceedings on Friday night, with Italy v France in Rome and the Wales v England classic in Cardiff on the Saturday. A weekend that often shapes the title race.
Round 4 of the Six Nations traditionally carries the heaviest weight in terms of championship implications: by this stage, league standings, points differentials and title scenarios come sharply into focus. Any defeat can effectively end a title push; a bonus-point win, conversely, can swing the championship. The weekend of 5-6 March 2027 serves up three high-stakes fixtures.
On Friday 5 March, Scotland host Ireland at Murrayfield with a 20:10 GMT kick-off: a Celtic clash that opens the round and routinely delivers an intense, often tightly contested match that can swing into the closing minutes. On Saturday, two fixtures: Italy v France in Rome (14:10 GMT) and the heavyweight Wales v England in Cardiff (16:40 GMT), one of the oldest fixtures in international rugby.
On the line: the Centenary Quaich, created in 1989 to mark a century of fixtures between Scotland and Ireland. The "quaich" is a traditional Scottish drinking cup.
France travel to Rome for their fourth match. On paper a winnable away day, but Italy have closed the gap year on year and the margins are narrowing.
One of the oldest fixtures in international rugby, contested since 1881. Inside a roofed Principality Stadium, the atmosphere in Cardiff is electric. A potential Triple Crown shot for England may be on the line.
The Centenary Quaich, created in 1989 to mark a century since the first meeting between the two Celtic nations, is one of several secondary trophies on offer in the Six Nations. The Scotland-Ireland rivalry is less heated than other British derbies but remains intensely competitive, often played in classic Highland-winter conditions. A 20:10 GMT Friday-night kick-off in Edinburgh guarantees an electric atmosphere.
For France, the trip to Rome is a familiar fixture. Italy have improved markedly in recent seasons and are no longer the automatic Wooden Spoon side they were in the 2010s. France must navigate the match with discipline and avoid being caught out โ especially in a year where the primary goal remains the Rugby World Cup in Australia in October. Squad rotation and load management could feature in French head-coach thinking.
Wales v England is one of the most history-laden fixtures in international rugby, first contested in 1881. In Cardiff, the atmosphere is unmatched: "Hen Wlad Fy Nhadau" sung at full voice beneath a closed Principality Stadium roof produces a spine-tingling acoustic effect. England, the traditional rival, always travel in numbers and the fixture extracts the very best from both sets of players.