It broke perfectly for late substitute Donte Martin who was alongside Brownlie on the breakaway and he calmly slotted into an empty net to seal all three points.
Victory for Palace means they stay top of the U18 Premier League South, a point clear of Southampton and five ahead of Chelsea. The other teams around the young Eagles do have multiple games in hand, however.
**Palace:** Hill (GK), Judd, Benamar, Danaher, Somade, Fasida, Drakes-Thomas (Martin, 82), Adams-Collman, Casey (Whyte, 82), Williams, Osei (Brownlie, 63).
Subs not used: Whitworth (GK), Okoli.
**West Ham:** Hooper (GK), Ebho, Scanlon (Balogun, 70), Medine, Oyebade, Kamara, Hargan (Beckford, 79), Nwosu, Landers, Sowunmi, Dike.
Subs not used: Chigwada, Nightingale (GK), Unwin.