For Ireland, their sole focus will be on delivering a performance when they take on England at Twickenham on Saturday.
Their opening warm-up game, which saw Joe Schmidt’s side emerge 29-10 victors over Italy, was a non-affair but where exactly this Ireland team are with regards to their ability and confidence will be known once the full-time whistle is blown in south-west London.
An overpowering defeat, like the one which Ireland suffered in the opening round of the Six Nations earlier this year, would be hugely damaging to this side’s confidence and alarm bells would truly be ringing ahead of the World Cup.
However, there is also another prize on offer if Ireland manage to get the better of Eddie Jones’ charges this weekend.
If Ireland win, they will move to the top of the rugby world rankings for the first time in history.
With both Wales and the All Blacks having a rest week, Ireland have the opportunity to clinch the top spot.
England, who are currently ranked fifth in the world, will move to fourth if they beat Ireland while if they do so by more than 15 points, they will overtake Ireland in third place.
Elsewhere, a Scotland win against France would see Gregor Townsend’s men take back their seventh-placed ranking after falling to eighth in the world last weekend due to their loss to the French.