The point from a goalless draw at Vestsjaelland proved enough to earn AaB their fourth Danish Superliga title as nearest challengers Midtjylland slipped up on the road.
The leaders knew clinching victory at Vestsjaelland would most likely see them crowned Danish champions for the first time since 2008, but they could not get the ball over the line in Slagelse. Midtjylland could therefore have closed to within a point of the leaders ahead of the final round of fixtures by beating Copenhagen, but they instead lost 3-2 to concede defeat in the title race.
Morten Rasmussen opened the scoring from the penalty spot after 14 minutes but goals from Rurik Gislason (47) and Andreas Cornelius (53) saw FCK turn the game on its head. After Rasmussen equalised in the 64th minute, Georg Margreitter was sent off for the capital club, who negotiated the dismissal well enough to produce a last-minute winner from Cristian Bolanos.
Copenhagen now lead Brondby by two points in the race for third after Thomas Frank's men were held to a 1-1 draw by Randers. Ronnie Schwartz fired eighth-placed Randers ahead on the half hour before Simon Makienok Christoffersen levelled in the 63rd minute.
AGF Aarhus and Viborg were both relegated after losing their respective home games. Basement boys Aarhus had Alexander Andersen sent off on their way to suffering a 3-0 defeat to Sonderjyske - Hallgrimur Jonasson, Tommy Bechmann and Rubin Okotie scored the goals.
Viborg's fate was sealed by FC Nordsjaelland, who ran out 3-1 winners in Jutland thanks to first-half goals from Emiliano Marcondes, Jens Stryger Larsen and Joshua John. Thomas Dalgaard responded for Viborg with a penalty before the hour but last year's Danish First Division champions must make an instant return to the second tier.
Elsewhere, Esbjerg consolidated themselves in fifth place with a 2-1 victory at Odense. Martin Pusic and Rasmus Falk Jensen exchanged goals in the first half before Jakob Ankersen hit the winner for Esbjerg 12 minutes from time.