Armenia equalled the biggest win in the country's history as they claimed a resounding victory against Denmark to deal a huge blow to the hosts' hopes of qualifying for the World Cup.
Armenia beat Slovakia 4-0 away from home in a Euro 2012 qualifier and they replicated that scoreline in Copenhagen, just days after a humiliating home defeat by Malta.
Yura Movsisyan scored twice - the first after just 24 seconds - with Aras Ozbiliz and Henrikh Mkhitaryan also on target as Armenia joined Denmark on six points in Group B, and ahead of the Danes on goal difference.
The pair are now four points adrift of second-placed Bulgaria and three behind the Czech Republic.
Vardan Minasyan's side made the ideal start when Mkhitaryan's cross from the right found Movsisyan and the striker slotted the ball into the bottom-right corner within 30 seconds.
Dennis Rommedahl twice shot wide as Denmark searched for an equaliser but Armenia came close to doubling the lead in the 17th minute when Movsisyan's 25-yard effort was tipped round the post by Stephan Andersen.
However, there was nothing Andersen could do two minutes later when Ozbiliz sent a low shot into the net from 20 yards.
Simon Kjaer headed wide from close range and Michael Krohn-Delhi shot past the post but Denmark did not force a save from Roman Berezovsky in the first half.
Kjaer had a header comfortably saved by Berezovsky and Andreas Cornelius sent an overhead kick over the bar as Denmark started the second half on the attack.
It was the visitors, however, who extended their lead in the 59th minute.
Again it was Movsisyan, this time from close range as he slotted home.
Rommedahl finally forced Berezovsky into action with the goalkeeper parrying his shot from the left of the area but Movsisyan was a thorn in the Dane's side, Andersen parrying his effort from the centre of the area.
Anders Christiansen tested Berezovsky but Armenia scored again through Mkhitaryan as he slotted the ball home across the keeper from the centre of the area with eight minutes left to ensure Armenia leapfrog the beleaguered Danes in the standings.