West Ham United's U21s were beaten 2-0 for their second Checkatrade Trophy contest as Exeter City were winners on matchday two.
Jonathan Forte's double at St. James Park left Liam Manning and Steve Potts' team pointless in Southern Group D after the result followed last week's defeat at Bristol Rovers.
The clash finished more than half an hour late after a first half stoppage due to a power cut saw some of the club's floodlights fail.