Charlton's U18s suffered a 4-0 defeat against Queens Park Rangers at the TSG Training Centre on Saturday afternoon.
The hosts took the lead on the half-hour mark through an own goal from Addicks defender Marley Dawkins.
The R's had their second ahead of the break as Rico Kennedy cut in from the flank and sent a left-footed strike in at the far post.
Fraser Neill added QPR's third as his low strike deflected beyond Finley Woodham after a cross was cleared into the midfielder's path.
Ridwan Hassan rounded off the scoring late on, firing into the top corner on the turn.
The U18s return to Sparrows Lane on Saturday when they host Swansea City in the Professional Development League (KO 1pm GMT).
Charlton: Woodham; Burnham, Gokah, Dawkins, Davis (Peterkin 19); Washington-Amoah, Belton (c), McMillan (Mylona 61); Richman (Ed Thomas 57), Sol-Loza (Randall 61), Tagoe
Sub (not used): Sadler
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