Terry Westley had named a relatively young and inexperienced side for the match at The Boleyn Ground although summer signing Scott Dann captained the side on his return from injury. Blues Res: Doyle, Joyce, Rowe, Packwood, Dann (Dunphy, 46), Preston (Hawker, 58), Hubbins, Sammons, Jervis, Ntambwe, Hronec (Williams, 83).
Blues got off to the worst possible start when Zavon Hines gave the Hammers a 1-0 lead when beating Colin Doyle with an unstoppable left foot drive
with just three minutes of the game played.
Six minutes later and the hosts doubled their lead when centre-back Bondz N'Gala beat Doyle to make it 2-0.
Blues left back Luke Rowe came close to reducing the deficit with 22 minutes gone but his free kick was deflected wide for a corner.
Rowe was booked just a minute later for a reckless challenge on Josh Payne.
Five minutes before the half time whistle Alessandro Diamanti all but killed off the game as a contest when he scored with a superb shot from a free-kick twenty yards from goal.
Things got worse for Blues just three minutes later when Hines scored his second and the Hammers fourth goal of the night with a superb solo effort on 43 minutes.
Half time: West Ham 4 Blues 0
Terry Westley made a change at half time when Scott Dann was replaced by right-back Jamie Dunphy - full-back David Joyce moving inside to take Dann's place in the centre of defence.
West Ham should have made it 5-0 just eight minutes into the second period but Frank Nouble wasted a good chance when one-on-one with Blues keeper Doyle.
However, Zabon Hines did make it 5-0 when he completed his hat-trick on the hour mark.
Just a minute later substitute Josh Hawker had a chance to grab a goal back but he missed from just six yards out and from the clearance Blues were made to pay as the Hammers scored their sixth goal of the evening. Will Packwood conceded a free-kick and Diamanti beat Doyle at his near post from 30-yards for his second goal of the evening.
Hawker again came close for Blues on 85 minutes when he cut in from the wing and unleashed a good shot which Hammers keeper Marec Stech saved at the second attempt.
Blues' best effort of the game came in the dying moments when Hubbins' long range effort was superbly tipped over his crossbar by Stech.
And so, two defeats from their opening two games of this Barclays Premier Reserves League South season with ten goals conceded and none scored, Blues will be hoping to take something from their next fixture against Fulham at Damson Park next Monday evening.
West Ham Reserves: Stech, Daprela, Ferrari (Fry, 78), N'Gala, Da Costa, Payne, Quashie, Behrami (Kearns, 57), Hines, Nouble, Diamanti (Edgar, 64).