A mistake from Wayne Rooney gifted Cardiff City a huge victory in their Championship play-off bid as they effectively ended Derby County's hopes of gate-crashing the top six with a 2-1 win in the Welsh capital.
The crucial moment came just before the hour mark when England's record scorer dallied in possession and was dispossessed by Lee Tomlin, who raced clear and scored Cardiff's winner.
The visitors were the architects of their own downfall having also gifted Cardiff the lead when Jason Knight's awful back-pass was intercepted by Junior Hoilett, who calmly rolled the ball into the net in the first half.
Knight made amends with a thumping finish to level after a super Derby break, but then came the blunder from player-coach Rooney.
The win means Cardiff remain sixth and with their play-off hopes in their own hands, while Derby are six points adrift and - barring an extraordinary run of results - consigned to another season outside the top flight.
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