Sirius fought back for 21 minutes.
Then Djurgården received a dividend - a substantial one.
Jacob Une Larsson nodded in 1-0 after an input from Magnus Eriksson.
Five minutes later, Hampus Finndell shot in 2-0 after a good preparation from Edward Chilufya.
Magnus Eriksson made it 3-0 after 28 minutes.
But he got help from Sirius goalkeeper Hannes Sveijer who was responsible for a less successful intervention.
The match is in progress.