Uwe Rosler paid tribute to his 'Brentford Babes' as they came of age with a 2-0 home win over promotion-chasing Sheffield United.
First-half strikes from Clayton Donaldson and a goal of the season contender from Harry Forrester stretched the Bees' unbeaten run to eight games and consigned United to only their second defeat of the season.
The display, in rain-soaked west London, also prompted praise from visiting manager Danny Wilson who tipped them for a top-six finish in League One, but although Rosler's side bossed the first half they withstood a second-half barrage from the Blades to climb into the play-offs.
Rosler said: "When you consider that the average age of that side is 22, that they were up against the best team in the league and the way they played in the first half, I'm speechless.
"I'm so proud to be the manager of a group of players like this. The loan players came in and were unbelievable in every area and if there is a better under-21 keeper than Simon Moore in England I'd be very surprised."
Rosler added: "This was an all-round performance that showed the best qualities of the side at both ends of the field, and given their ages I think my players should be incredibly proud."