Fulham manager Martin Jol believes Arjen Robben can provide the spark to turn the Netherlands' faltering Euro 2012 campaign around in their final Group B game against Portugal on Sunday.

Bert van Marwijk's side are struggling to qualify for the quarter-finals after consecutive defeats against Denmark and Germany in their opening two games.

They must now beat Portugal on Sunday, hope Germany beat Denmark, and make sure they finish with a better goal difference than Portugal and the Danes, to qualify for the last-16.

Robben has experienced significant despair for club and country in recent years, including defeats in the 2010 World Cup final and in two Champions League finals. However, Jol remains adamant that those experiences will not weigh the winger down and only serve to inspire him to achieve future glory.

"Of course he's had his disappointments, losing in two Champions League finals, the German Cup and the World Cup against Spain," Jol told Yahoo! Sport. "But that was all coincidence; Arjen Robben is a player that will make the difference and has made the difference for Bayern Munich in the past.

"I know as a sportsman he will love to put it all right and show everyone he is one of the best players in Europe."

The Dutch were guilty of wasting a number of chances against Germany and van Marwijk has criticised his team's performance against the 1996 champions.

"We defended moderately and the co-operation between our midfielders and defence was poor," said the Dutch coach.

"[But] we cannot imagine that it is over when we are at this level.

"I thought we played very well in the first 20 minutes and had a few decent chances, but you have to take them against Germany," added van Marwijk.

"In the final minutes we tried to force things but you have to be daring to get the second goal."

Germany are now favourites to win Group B following another impressive performance and their manager Joachim Loew has implored his side to round out the group stages with a win over Denmark in their final game

"The group winner would be important because we can stay in Gdansk and that would probably be to our advantage in the quarter-finals," said Loew.

For more insight from Martin Jol and other leading managers plus all the coverage of Euro 2012 go to yahoo.eurosport.com