Haaland struck at a crucial moment after Denmark had applied pressure following Norwayâs strong start, finding space from a corner to put the hosts back in front.
Riemer criticised Denmarkâs defending for the goal, arguing that his players allowed Haaland too much room inside the penalty area.
âNorway won on a single moment of brilliance and a huge mistake from our side. Haaland is so clinical when he gets the opportunity,â Riemer said.
âHaaland needs so little space to decide matches. I have to say that Norway currently have the worldâs best striker.â
The Manchester City forward finished with two goals and now has 40 goals in 33 appearances at Ullevaal.
His overall international record stands at 64 goals in 56 matches for Norway.
Norway captain Martin Ădegaard also played a decisive role, providing the assist for Haalandâs second goal.
âWhen a football match is tight, like this one was, it is players like Ădegaard and Haaland who are decisive,â Riemer said.
Ădegaard was pleased with Norwayâs victory despite admitting that the hosts had areas to improve.
âIt tastes good. Itâs nice to beat the neighbours,â he told TV 2 Norway.
âThere is a lot we could have done better, but even when we came under a bit of pressure, we found a way to come back and respond.â
The Arsenal midfielder also praised PĂ„l Fjelde, who was involved in the preparation for Norwayâs decisive set-piece.
âWe can only praise PĂ„l Fjelde. He has really done his homework,â Ădegaard said.
The defeat was Denmarkâs first against Norway in a competitive fixture, with Riemerâs side now turning their attention to Sundayâs meeting with Wales at Parken.
