Having trailed by two goals at the interval, the Reserves put in a fighting finale that with a bit of luck would have earned them a point at Broadwood this afternoon.
Rangers probably deserved to be ahead at the interval, though probably not by two goals that fell into the preventable category.
Ross McCormack, who had featured from the bench in the first team meeting 24 hours earlier, scored both.
His first after 33 minutes followed a defensive mix-up that left the Rangers striker unchallenged as he netted from six yards.
Then two minutes from the interval, he drove in from the left to fire in a in a twenty-five-yarder that went in at keeper Craig Samson's near post.
If there had been much between the sides earlier, United really came into their own in the last twenty minutes and then battered Rangers for the last ten during which they created no less than five chances!
Lee Miller had a back post header saved by the keeper and then Garry Kenneth had first a shot and then a header cleared off the line.
Collin Samuel hit the underside of the bar and Barry Callaghan, whose corners had caused the earlier chaos in the home defence, just couldn't get enough purchase on his shot to beat the keeper when he met a Stuart Abbot cross.
In the end, however, it was all too little, too late.
Dundee United: Samson, Kenneth, Dodds, Gardiner, Callaghan, Duff, McInnes, Robertson (Cameron 68), Easton (Abbot 77), Miller, Samuel. Subs not used: McLean, Goodwillie, Burnett.