West Ham U18s showed the senior players how it's done with victory over Arsenal.
The first teamers face the Gunners later today and Saturday the U18s won 2-0.
West Ham sit comfortably at the top of the table.
The Hammers struck first after the hour when Divine Mukasa's scuffed shot rolled its way into the back of the net.
West Ham doubled their lead 10 minutes from time when Gideon Kodua scored from close-range to clinch all three points.