A massive game.
Ireland have a chance to finish the day in a play-off spot in their World Cup qualifying group, as long as they beat Armenia and other results go their way.
But anything less than a victory this evening at the Aviva Stadium will likely signal the end of their campaign.
After the dreadful 2-1 loss in Yerevan last month, the Boys in Green will be looking to make amends.
Follow our live blog for all the action (kick-off, 7.45pm).