Norwich City's 12-game unbeaten run was ended in a pulting 4-3 defeat at home to Derby County.
City dominated the opening half-an-hour and stormed to a two goal lead thanks to low finishes from Ben Godfrey and Teemu Pukki.
However, Derby recovered and managed to go into the break level, with Fikayo Tomori and Mason Mount profiting from failed set-piece clearances.
The Canaries then regained the lead with Pukki's second in the 80th minute but the game was then paused for 15 minutes after a floodlight in the Regency Security Stand failed.
Derby emerged from the delay the better and turned the game on its head with goals from Florian Jozefzoon and Jack Marriott proving the difference, despite substitute Jordan Rhodes rattling the crossbar with the last kick of the contest.