Brechin City Youths Under-13s came into this game looking to extend their unbeaten start to the league season.
They made two changes to the starting 11 with James McClelland and Jack Robertson coming in.
The match got off to a slow and scrappy start, with much of the play in midfield and few scoring opportunities being made.
About 15 minutes in, Brechin took the lead when James Williamson played a defence splitting pass for Finlay Keith to run onto, who made no mistake as he struck a fine finish beyond the ‘keeper into the top corner.
The goal signalled a period of dominance by Brechin with Jack Robertson causing all sorts of problems to the Thistle defence, including a great run and shot which struck both posts before being gathered on the line by the ‘keeper.
Half-time: Brechin Under-13s 1, Dundee Thistle Under-13s 0.
The second half kicked off with Brechin showing more urgency and looking to kill the game off.
The more attacking display soon saw Brechin double their lead as Connor Scott finished low into the corner from inside the area.
Five minutes later and it was three, when Cameron Lightly hit an unstoppable shot from about 20 yards.
The game was being played almost entirely inside the Thistle half, but a break into the Brechin area saw the Dundee side awarded a penalty. Goalkeeper Tyler Webley stood firm and held the powerfully hit shot to the joy of his team mates.
The homeside continued to pile the pressure on and it was no surprise when William Rattray added a fourth, firing into the roof of the net from about 14 yards.
The scoring was completed with about 10 minutes remaining as James Williamson finished from a tight angle giving the ‘keeper no chance.
A club spokesperson said: “This was a comprehensive win for Brechin and the second clean sheet of the season was pleasing thanks to Tyler Webley’s penalty save.
“The boys are now up to second in the table and it was particularly good to see James McClelland and Jack Robertson having fine games.
“We now host Riverside next Sunday as we look to go into the October break undefeated.”