Republic of Ireland stand-in captain Shay Given knows a clean sheet is the key to booking a place in the Euro 2012 play-offs.
The goalkeeper and his international team-mates, minus injured skipper Robbie Keane, will on Tuesday go in search of the point they require against an in-form Armenia to secure second place in Group B.
Given is aware of the threat posed after the Republic's narrow 1-0 win in Yerevan in September 2010, but he also knows a ninth successive clean sheet will get the job done.
The Aston Villa man said: "We look solid, but what has happened in the previous eight or nine games doesn't really matter, it's what happens tomorrow night what matters.
"We know if we keep a clean sheet tomorrow, then we are in the play-offs.
"Hopefully, we can do that, but the games in the past count for nothing. It's a new game, it's all about keeping your focus and making the right decisions on the night.
"They [Armenia] are a real threat, of course. I don't think there are any superstars in the team, but they are all players of great quality and they have shown that in the last three games, they have scored 11 goals.
"It will be the toughest game we have faced for a while and we will be really tested at the back, including myself.
"But hopefully we will test them as well at the other end. We have got some players who can score goals as well."
Stephen Kelly will replace the suspended Stephen Ward at left-back, while Richard Dunne's return from his ban means Darren O'Dea will step aside.