Cardiff now need a miracle to make the Championship play-off final after West Ham scored on 39 minutes to increase their lead to four nil.
Approaching the half hour mark in the Championship play-offs, Cardiff are a goal down to West Ham at Upton Park.
On aggregate, West Ham now lead the Bluebirds by three goals to nil.
Meanwhile in the Blue Square Bet Premier play-off, Wrexham face a similar fate. They are now three goals to nil down at home to Luton.
The latest scores now mean that both Welsh sides face an uphill struggle to make the play-off finals.
There are big games for Cardiff and Wrexham tonight as both sides are in action in the play-off semi finals.
Cardiff are away to West Ham while Wrexham are at home to Luton.
Both Welsh sides lost two nil in their first leg of the play-offs.
Cardiff City coach Malky Mackay says the side must make sure they're in the game when they face West Ham tomorrow in the second leg of their play off semi final