Ireland’s bonus point victory over France in the final Six Nations game last weekend has kept alive their slim chances of retaining their Six Nations crown on Saturday.
Wales and Ireland will face off in a humdinger of a clash in Cardiff before England take on Scotland to finish the championship at Twickenham.
Ireland, England and Wales can all win the championship on the final day and there are various permutations which could see the title change hands.
How the Six Nations will be decided
Wales have so far not picked up a bonus point in the competition which previously could have seen them finish level on points with England if Eddie Jones' side beat Scotland and secure a try bonus point.
However, Six Nations rules have changed to ensure that this scenario can’t happen as Wales will be awarded three extra bonus points if they achieve the Grand Slam.
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Wales will also win the title for the first time since 2013 if they draw with Ireland and England fail to beat Scotland.
However, if Ireland pull off a win against the Welsh, they will give themselves a chance of retaining their crown, but they will need Scotland to draw or beat England at Twickenham, a ground where they haven’t beaten the home side since 1983.
The Red Rose, who have picked up three bonus points in the competition so far, will regain the Six Nations crown that they lost last year if they beat Scotland at Twickenham providing Ireland do them a favour in Cardiff by beating Wales.
Wales will obviously start as favourites for a third Grand Slam under coach Warren Gatland in what will be his final Six Nations game before he leaves his post after the World Cup.
However, if they lose, the championship suddenly gets interesting again and all eyes will be on Twickenham to see if England can beat Scotland and regain the title.
It is set to be another thrilling finale with all three teams looking to gain crucial momentum ahead of the World Cup later this autumn.