Even though actor Ulrich Thomsen originate from Fyn, just as his real life character Richard Møller Nielsen, Thomsen had a hard time learning Møller Nielsens very special dialect.
Cyron Melville, who plays Brian Laudrup, refused to act until he got a copy of the real Hummel shoes that Laudrup played in during the tournament.
Jon Lange, who plays Kim Christofte, is right footed and had a difficult time shooting the ball with his left foot, like his real life character did.
Gustav Giese who plays Peter Schmeichel was told by director Kasper Barfoed to scream and shout all that he could in order to portray the danish goalkeeper on the field.
Johannes Lassen who plays Kent Nielsen had to have a mattress underneath him when shooting the finale between Denmark and Germany. In real life match Nielsen made a bicycle kick in order to save the Germans from scoring a goal, but when several shots were made in order to get the right kick for the film, Johannes Lassen had to have a mattress to fall on so he didn't injure himself.