It had all started so well for Blackpool, beating Derby after a matter of seconds this evening, but by 10PM they found themselves three points off the relegation zone and in real danger.
David Goodwillie's stunning strike had The Seasiders ahead after 21 seconds, but deadly Derby punished their hosts to run out comfortable winners at Bloomfield Road.
Chris Martin, Patrick Bamford and Craig Bryson all hit first-half strikes for The Rams, to leave Pool deep in relegation trouble.
With Millwall and Charlton both winnings Blackpool are in serious danger, after recording back-to-back home defeats at the business end of the season.
Barry Ferguson had made four changes to his side, and the eleven he’d put out couldn’t have made a better start.
21 seconds were on the clock when Goodwillie picked up the ball, and from a similar range to Elliot Grandin’s goal on Saturday, he picked out the roof of the net, with Lee Grant slightly off his line.
However remarkably with the second chance of the game, Derby equalised. Two minutes had gone when Johnny Russell crossed for Martin to scramble home for The Rams.
Unfortunately for Pool, Derby then had their tails up and had completed the turnaround with 14 minutes gone. Bryson burst down the left and put his cross on a plate for Bamford, who tapped home their second from close range.
Every chance was turning into a goal, and again it was Derby doing the damage. A quick free-kick released Bryson, and with the Blackpool defence falling asleep all he had to do was outmanoeuvre Craig Cathcart, before finding Matt Gilks’ bottom corner.
It was now an uphill task for Pool, who came close to finding a way back into the contest when Cathcart headed Tony McMahon’s cross wide.
The visitors were next to threaten, Cathcart’s mistake sent Bamford running in on goal, but the Chelsea loanee could only fire at the feet of Gilks.
Richard Keogh then headed wide for Derby, who were the ones who finished the stronger side of another disappointing half for Blackpool
Half Time: Blackpool 1 Derby 3
After the break Neal Bishop came on for Grandin and Blackpool reshuffled, but Derby could have gone further ahead, had Andre Wisdom not dragged his effort wide.
Soon after Blackpool came so close to a second, when Andy Keogh's header from McMahon's cross was fantastically pushed to safety by Grant.
Ferguson then replaced Angel with Chris Basham, before Bishop headed Goodwillie's cross wide at the back post.
Blackpool's final throw of the dice was to throw Tom Barkhuizen on in place of Dobbie.
The chances were failing to materialise however, the only one of real note came as Bryson shot into the hands of Gilks.
Barkhuizen twice had penalty shouts turned down, as Pool lost again to leave themselves in serious dangers of relegation.
Full Time: Blackpool 1 Derby 3
By Mark Ridgway