Sweden's qualifier against Denmark last Wednesday ended in controversy when the referee abandoned the game after a Danish fan invaded the pitch following the decision to award Sweden a late penalty with the scores level at 3-3.

Captain Freddie Ljungberg admitted the players have been affected by the Denmark game, but must now focus on their meeting with Iceland.

"It was a special game on Saturday which takes time to forget," the Arsenal midfielder said.

"But we're professional football players and we should be able to recover and arrive concentrated for the next game.

"We knew before the match with Denmark we had a chance to move above Northern Ireland in the table and that chance is still within our grasp."

Iceland head into the match after a 1-1 draw with Liechtenstein on Saturday which continued their miserable run of form in Group F.

Coach Eyjolfur Sverrisson must also play without Barcelona striker Eidur Gudjohnsen after he was shown two yellow cards in the match in Reykjavik.

Spain travel to the Rheinpark Stadium hoping to avoid an upset against Hans-Peter Zaugg's team.

Striker Raphael Rohrer scored his first goal for Liechtenstein against Iceland, but admitted his side will face a much tougher task when Spain come to Vaduz.

"We will play against football players, whom we know otherwise only from the television," Rohrer said.

"Players who earn each year millions so it will be a big challenge for us but we may dream about a good result.

"The match though matters a lot in terms of qualification for the European championship so Spain will not underestimate it."

Victories over Denmark and Iceland in March, followed by Saturday's 2-0 win in Latvia, has put Spain back on track for qualification and they are now third in the standings, a point behind leaders Northern Ireland and level with second-placed Sweden.

Defender David Albeda, who made his debut against Liechtenstein in a World Cup qualifier back in 2001, says his side must produce a professional performance.

"Spain have to show that they want to be among the first two teams in the group," Albeda said.

"You cannot treat anyone lightly and we have to confront our opponents like you would a great team."

In Group F's other match, Denmark travel to Riga to take on Latvia without defender Christian Poulsen, who is suspended following the red card he received for punching Sweden'sMarkus Rosenberg.

Morten Olson's side must achieve victory against against Latvia to keep alive any realistic hope of qualification.