Last year's beaten finalists Cardiff City crashed out of the Capital One Cup in the first round after blowing an early lead to go down 2-1 at npower League Two Northampton.
Heidar Helguson gave the Bluebirds a dream start by converting a second minute penalty but David Artell equalised for the Cobblers on 37 and Alex Nicholls sealed a shock win by heading home just after the restart.
Gus Poyet's Brighton were also on the end of a shock defeat as they went down 3-0 to Paolo Di Canio's newly-promoted League One Swindon at the County Ground while Bristol City were another Championship side to crash out as they were beaten 2-1 by Gillingham at Ashton Gate.
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