Sheffield United's Under 18s took the spoils against local rivals Sheffield Wednesday in Saturday morning's academy derby.
Angelo Cappello's volley just under 20 minutes from time was reward for a strong second half performance where the Blades created chance after chance without finding the net.
The result stretches United's winning run to four games and means they jump above last year's league winners in the table.
For a long time it looked like being a frustrating match as the young Blades struggled to recreate the flow of goals on show at Leeds United last weekend.
Frankie Maguire saw a shot well blocked inside the box after a corner fell to him and it was from set-pieces United looked likeliest to score.
Kyron Gordon got himself free from the next corner and saw his header cleared off the line before Sam Ackroyd headed Zak Brunt's free-kick just wide.
There were few more chances for either side in the first half but after the break the Blades came out with much more intensity about their game as they looked for a winner.
They penned Wednesday back inside their own halves and it was Gordon again who went close when his header back across goal dropped wide with nobody able to connect with it.
Brunt also went close after a mazy run into the box but his low effort slid wide before Cappello saw a shot saved and the rebound flicked away before Ackroyd could pounce.
It felt like a goal was coming as the Blades laid siege to the home goal, and it did come with 17 minutes to go when Cappello volleyed Brunt's lofted ball into the box home first time into the back of the net.
It gave United the initiative in the final minutes but gave the hosts the desire to bounce back and not be beaten on home soil.
A short back pass from Brunt almost gave the hosts a chance but Harrison Foulstone got back well to see out the danger and that was the most the Blades were tested as they held on for a well-deserved three points at Middlewood Road.
Blades: S. Kelly, J. Kelly, Boyes, Neal, Gordon, Foulstone, Gaxha (Jebbison 68), Maguire, Ackroyd, Brunt, Cappello (Viggars 87)