Twenty years ago, Denmark stunned Germany in the European Championship final to cause one of football's biggest upsets.

In the first competitive match between the two countries since then, the Germans are again heavy favourites but Denmark coach Morten Olsen doesn't expect them to take victory for granted.

"I am 100 per cent sure that Germany won't underestimate Denmark," Olsen said Saturday, on the eve of the meeting between the Group B rivals in Lviv where a place in the Euro 2012 quarterfinals is at stake.

"They know that we have a team that, on our day, can challenge against any opponent. We don't have the advantage that we had 20 years ago," Olsen said.

Denmark won the Euro 1992 final 2-0 and pulled off another surprise in this year's tournament, beating the Netherlands 1-0 in the first match. The Danes then lost to Portugal 3-2 after a late winner by substitute Silvestre Varela.

Denmark needs to beat group leader Germany on Sunday to ensure advancement to the knockout phase, though a lesser result could also suffice depending on the outcome of the other match between Portugal and the Netherlands.

Defensive midfielder William Kvist, who plays club football for Stuttgart in the German league, said Denmark needs to pay special attention to German players Mario Gomez, Sami Khedira, Mesut Oezil and Bastian Schweinsteiger.

Though Denmark is the outsider in the group, the team won't be satisfied with its performance in the tournament if it's eliminated at this stage, Kvist said.

"I don't think so. We are happy that we were able to challenge some of the best teams in the world," he said. "But we need results on the table. And I don't think we can say we have achieved that unless we advance."