Having seen a shot hit the post earlier, Sam Byrne opened the scoring on 30 minutes when Sunderland midfielder George Honeyman’s poor defensive header fell to the Irish striker and he tucked it under the on rushing keeper.
Following the break United again hit the frame of the goal when Jack Rudge’s long range effort hit the bar but at the death Dæhli secured United’s first home points of the season when he picked up the ball, burst forward and calmly slotted under Sunderland’s keeper.