Denmark coach Morten Olsen has said that tonight's humbling by unfancied Armenia could be the worst night of his career.

The Danes were trounced 4-0 in Copenhagen to leave their hopes of qualifying for next year's World Cup in bits.

"I have no great analysis to offer," said Olsen. "The only thing I will say is that it is 100% my responsibility. There's no doubt about that. This is incomprehensible. It is arguably very close to being the worst night of my career."

Denmark now find themselves four points behind second-placed Bulgaria in Group B and Olsen now doubts that they can reach Brazil 2014.

"After this I do not think we are fighting to be at a World Cup," he said. "There was great optimism before the game and we had opportunities but, after this match, I can't really see it. Realistically, it will be difficult."

Italy lead the group by four points ahead of Bulgaria.