Leyton Orient pushed Academy League Group C leaders Blackburn Rovers all the way in a tight affair at Ewood Park on Monday but Rovers saw off the 0’s thanks to a second-half Jason Banton penalty.
The O’s gave as good as they got against the Academy side and could have gone ahead when Louis Crowther headed inches wide in the dying seconds of the first half.
Harry Beautyman then went close with a curling free kick and Chris Benjamin shot’s forced a smart save from home keeper Josh Swann.
The visitors were made to rue their missed opportunities, when on 70 minutes, Banton was upended by keeper Jack Giddens and the striker dusted himself down to convert the spot kick with relative ease.
As the home side took charge Giddens made a good stop from a Michael Potts free kick and despite their best efforts the O’s were unable to find an equaliser.
Rovers will now play Manchester United in a plum 5th Round tie.