The Clarets' youth team kicked off their inaugural Professional Development League campaign with a 4-1 opening-day defeat to a strong Watford side.
Michael Fowler (above) scored the Clarets' only goal late on as a Ryan Cassidy hat-trick and a first-half goal from Juril Adedeji secured all three points for the North London side.
It was the visitors who started on the front foot and came close when Cassidy broke forward before finding Reece Miller who forced Adam Bruce into a great stop.
However, Watford did take the lead on the 25th minute mark as Adedeji was brought down in the area and the tricky winger stepped up and slammed home from the penalty spot.
Burnley got their first opportunity of the game when Terry Mupawira played in Akim Samms, who darted through on goal before rifling a shot just wide.
However, minutes later Cassidy doubled the Hornets' lead after slotting in past Bruce from close range to make it 2-0 at the break.
Just after half-time the young Irishman grabbed his second and Watford's third after finishing a nice move with a neat finish from outside the area.
The in-form forward completed his hat-trick with 70 minutes played after a tap in from close range which looked to put the game out of sight.
But the young Clarets did pull one back late on when Fowler picked up the ball inside the area and fired home a late consolation goal for Danny Cadamarteri's side as they were given an early glimpse of the new test awaiting them.
Burnley: Bruce, Moss, Thomas, Clarke (Egan 74), Mpofu, Mupariwa, Kershaw, Yari, Jumeau (Meredith 64), Samms, Fowler.