This was the first game in charge for the new management pairing of brothers-in-law Paul Lawson and his no 2, Dons legend, Russell Anderson.
Anyone expecting a dramatic change in the starting 11 would be severely disappointed.
The new duo sent out the exact same starting 11 for this encounter as caretaker boss Jerry O’Driscoll had fielded in midweek against Lossiemouth.
It would have been surprising had they rung the changes as that side ran out impressive 6-1 winners on Wednesday night and anyone dropped after that display would have had justified cause to complain.
The new duo got the best possible start when Liam Burnett delivered with a back stick header after 21 seconds of play.
It wasn’t just the timing of this goal that was superb, the manner of its execution was simply top drawer stuff and the opposition never had a kick of the ball before they had to fish it out from the back of the net.
That’s two goals in two games for the youngster who has just broken into first team contention this season.
It looked like United were going to overwhelm their visitors and for the next twenty minutes or thereby that is pretty well what they did.
Supply to the front two of MacPhee and Barbour was abundant and Keith were pinned back into their own territory more often and for far longer than they would wish.
Shots rained in on Dey’s goal and the young keeper did well to parry, block or hold on-target efforts.
Keith’s response was to break at pace on a few occasions.
Towards the end of a period of sustained pressure towards the left side of the final third Barbour played in MACPHEE .
With shimmy here and a twist or two there, he managed to manoeuvre himself into a gap and swivelling round left clattered the ball well beyond the reach of DEY from 18 yards out.
The second half, or at least the first half hour of it, was a much more evenly balanced affair.
Keith spent more time in United territory than they had in the first period but still United were by and large in control.
Keith never really looked like they had the penetrative powers to trouble the United rearguard.
Around the hour mark United sustained a period of siege to the visiting goal area that produced five successive corners all of which created some sort of chaos but none of which did more than that either.
Gethins came on as a sub for Burnett in 71st minute but had to be withdrawn with an injury a few minutes later.
Having made all three substitutions, United were reduced to ten men for the remainder of the match.