Copenhagen held in derby
Honours were even as Copenhagen were held 1-1 by city rivals Brondby.
The result leaves the sides level on 11 points, with Stale Solbakken's men one place above Brondby in fifth on goal difference.
Ailton Jose Almeida put Copenhagen in front four minutes before the break, but Brondby hit back six minutes into the second half through Morten Duncan Rasmussen.
Aalborg cut Aarhus's lead at the top back to two points with a 1-0 win over Midtjylland with Fredheim Holm grabbing the only goal in the 41st minute.
Esbjerg are a point behind Aalborg after they won 1-0 at Randers as Jeppe Mehl got their only goal in the 69th minute, while Koge claimed their first win of the season by beating Sonderjyske 1-0 with a goal from Soren Nielsen.