TIGHT and tense – they've been two watchwords for the World Cup play-offs and nothing changes tonight.
Statistically only one in four European knockouts goes over 2.5 goals and another unders is expected in Dublin.
In fact after three 0-0 draws in the Euro second legs another that forces extra time can't be ruled. No scorer pays 11-2 at Betway and remember to back that instead of 0-0 in case there is an own goal.
Martin O'Neill was slated for his pragmatic approach in the first leg in Denmark but he'll be hailed a hero if gets Republic of Ireland to Russia.
Before the 0-0 draw on Saturday I tipped the Irish to qualify at 6-4 and they remain that price with Paddy Power.
The Danes are favourites to make it through at 4-6 with Ladbrokes and the difference in price is too big considering the state of play.
Ireland should be slight favourites but bookies are probably taking into account they don't have an away goal and will need to strike twice if they concede.
To win in 90 minutes O'Neill's men are 9-5 at Marathonbet with the Danes 85-40 and a draw 2-1 at bet365.
Chances were at a premium in the first leg but the return of David Meyler could free up Jeff Hendrick for a more positive role.
Set-pieces could be Ireland's best hope for a goal and Shane Duffy is their dangerman. He is 14-1 at Unibet to score.
Christian Eriksen is the man the Danes will look to for inspiration and the Spurs star is 18-5 with McBookie to net.
Under 2.5 goals pays is no bigger than 2-5 with McBookie while under 1.5 pays 11-8 with Paddy Power.
It's unlikely either side will take risks early on and 0-0 at half-time is a best 5-4 at Paddy Power.
Ireland to qualify