The strong Dagenham defence easily coped with the United forward line, and after 27 minutes Junior Wilson replaced an ineffective Carl Zachhau. A minute later came the only goal of the game when Mark Lawrence was brought down by Kevin Day and skipper Pat Staunton scored from the resulting penalty despite a brave attempt by keeper Tim Garner.
Glen Donegal headed just wide shortly afterwards, and on 38 minutes a strong run by Allan Pluckrose ended with a cross into the area. Glen controlled and shot towards the top right hand corner but Daggers' Dave Morgan tipped over for a corner.
The second half belonged to the Ducks who pressed forward throughout. A close range effort by Glen deflected wide, and a rasping first time drive from the same player narrowly went over the bar.
On 78 minutes Cliff Hercules was bundled over in the box by Gary Seymour for a clear penalty, but the referee ignored the strong appeals - one of a number of strange decisions all afternoon. A minute into injury time a cross by Graham Reed was headed just over by Hercules to bring an end to United's Championship hopes for another season.
Dagenham
Aylesbury United
Bognor Regis Town
Kingstonian
Bromley
Dulwich Hamlet
Carshalton Athletic
Bishop's Stortford
Hayes
Wokingham Town
Hendon
Slough Town
Leyton Wingate
Basingstoke Town
Marlow
Barking
St. Albans City
Grays Athletic
Staines Town
Harrow Borough