West Ham United's U23s travelled to Borehamwood FC on Friday night to take on Arsenal but were beaten 3-0 by the north Londoners.
Vlad Dragomir bagged a brace before Eddie Nketiah added a third for the Gunners, who leapfrogged the Hammers in the Premier League 2 Division 1 table into fourth spot with the win.
Terry Westley's youngsters have their third and final Checkatrade Trophy group match next up when they travel to Wycombe Wanderers on Tuesday.