Denmark's home advantage between the two legs of the play-offs has been wiped out, but Ireland have plenty of work ahead of them still for two reasons. "Urged on by a big crowd as well... we have a lot to play for".
The reality of what Ireland need to do in order to qualify for the 2018 World Cup has set in.
"Age [Hareide] said last night in the press conference that he thinks they are capable of scoring at the Aviva - I wouldn't doubt that", said O'Neill.
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Taide's departure, trapped in front by Dipendra, set the cat among the pigeons as the innings went on an inexorabe tailspin. A suffered its first-ever loss against Nepal as the neighbours overcame the men in blue in the U-19 Asia Cup in Malaysia.
To that end, Ireland must acknowledge that they may have to register more than a solitary goal in 90 minutes - something they've only done against Serbia and Moldova in this qualifying campaign.
However, Martin O'Neill has expressed a desire to be more attacking in the second leg, which could mean a start for Shane Long this time around. While it was hard to get too excited by what we saw on Saturday night, let's stay positive and believe we can enjoy a night to remember at the Aviva Stadium in the second leg.
Ireland needed a play-off to secure their place at Euro 2016, beating Bosnia 2-0 at home following a 1-1 draw in the first leg a nd O'Neill is hoping history repeats itself. We don't concede many goals and hopefully we don't concede on Tuesday but we can be a bit better on the ball and we will create a lot more.
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That's what it's for, to enable these guys to go down and play a couple games, get their rhythm, still practicing with us. Ntilikina's teammates, though, didn't hold back in coming to the point guard's defense.
"You've got two games in relatively quick succession when you play global matches".
"They will come more out, which allows us to get more space. We have to take the pressure". "We know their threats even more now, if we defend like we did tonight, I'm sure we can score".
He added: "We would obviously want to be better with the ball in Dublin when we are playing in front of our home fans, and in all honesty, we will need to be if we have to score a goal".
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What is bothering me is the rumours, so I want to tell you my side and for you to hear the words from my mouth. I'm enjoying it in a way I haven't for a long time".
Asked whether he expected to be man-marked, Eriksen replied: "I have been man-marked several times before, but I'm not sure if Ireland will do it".