West Ham United U18s 0-1 Arsenal U18s
A solitary strike ten minutes from time dashed the Hammers' hopes of maintaining their winning run on Friday.
Chuba Akpom scored the only goal after coming off the bench with Tony Carr's team using the match as preparation for Wednesday night's big FA Youth Cup tie away to Wolverhampton Wanderers.
Danny Potts returned to the Academy set-up and could feature again in midweek, while Robert Hall is also an option for the Wolves date as he can be temporary recalled for the cup tie from his loan at Oxford United.
West Ham United: Cowler, Young, Potts, Miles, K Lee, Chambers, Turgott, Powell, E Lee, Sadlier, Fanimo