But it may not be enough for a play-off place.
What if Wales and Croatia are level on fairplay points? "I don't know about revenge, but certainly the view among the players is that if Russian Federation was available to us and we could make it there, thoughts about Seamus would be very much in the forefront of our minds", he said. The Dragons are coming from a slim 1-0 away win against Georgia, where a goal by Tom Lawrence led the team with the three points from the game.
Victory for Wales would guarantee a place in next month's play-offs as one of the eight best group runners-up.
"Up until two years ago, we'd never been anywhere near it, but now we are", said Coleman, speaking at the pre-match press conference in Cardiff. There's nothing to fear or to worry about.
'It's as big as anything we've been involved in but the good thing is we've been here before. "We've got to contain our excitement".
"It will very be similar to the game in Dublin where two sets of committed players were locking horns".
IRELAND have been dealt a hammer blow as Shane Long has been ruled out of their massive World Cup qualifier against Wales in Cardiff due to a hip injury. 'They were labelled the golden bunch of players before we qualified for the Euros.
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His successor, career diplomat John Tefft was summoned out of retirement and served as U.S. ambassador to Russian Federation between 2014 and 2017.
"But they have earned it now".
"They've gone one step further than anyone else that has gone before them, but that's in the past as well". It is not often that Ireland's fans struggle to make themselves heard above the din, but they did at the start.
The Serbs face Georgia this evening and will be confident of securing their place in Russian Federation next summer.
Gareth Bale, like Ryan Giggs, Ian Rush and all those others, will just have to wonder what it is like to play in the world's biggest worldwide competition.
Until that point, it was the team in red who had showed more guile, even hampered by the absence of the injured Bale.
Elsewhere on Friday, Wales visit Georgia in Group D hoping to keep their hopes of securing a play-off spot alive. The Green Army is coming off a 2-0 win against Moldova but this match will be a much tougher task.
Wales dominated possession from the outset and kept their opponents penned into their own half early on, as Ireland struggled to lay a glove on the home side. Ireland failed to clear their lines before Joe Ledley picked out Hal Robson-Kanu who glanced a header just wide. There's no doubt they will travel in their thousands and as I say, it's going to be like a cup final, we need to go there and win and we will be looking to do that.