Albion's scholars suffered their first defeat in the U18 Premier League Cup following a 4-1 defeat to Fulham on Saturday afternoon.
Although Justin Seven-Seven opened the scoring after three minutes, the hosts soared to victory at Motspur Park - levelling before the break prior to three second-half goals taking the game away from Chay Thompson's men.
It leaves qualification for the knockout stages from Group F wide open, with both the Baggies and Fulham level on three points in second and third place respectively, while Blackburn Rovers lead the way on four points.
Leeds sit bottom of the group on just the singular point and Thompson's team face leaders Rovers in their final group match knowing they need to match or better the Cottagers' result against the Whites to progress in the competition.
Albion: Moses, Asomugha (Perkins), Abudu, Shaw, Round (Jackson), Blackshields (Bastafield), Colesby, McNeil, Parmar, Seven-Seven (French), Okorodudu (Dexter).
