Blackpool goalkeeper Richard Kingson weathered Tottenham's second-half onslaught to ease their relegation fears, recording a famous 3-1 win over last week's conquerors of AC Milan on Tuesday night.
Charlie Adam put the Seasiders ahead with a clinical penalty after Sebastien Bassong brought down DJ Campbell.
Campbell doubled the home side's lead, finishing off a rapid counter-attack by converting James Beattie's cross.
Brett Ormerod slid home a third before Spurs grabbed a late goal courtesy of Roman Pavlyuchenko's deflected effort.
Spurs did not go quietly, peppering their opponents' goal before and after the break and repeatedly having efforts cleared off the line and others saved by Kingson.
The Ghanaian goalkeeper helped Blackpool to ran out worthy winners as they started the match only two points above the Premier League relegation zone but were propelled towards the relative security of mid-table by a performance overflowing with passion, discipline and endeavour.
After half-time, Tottenham ratcheted up the pressure, but Pavlyuchenko twice failed to beat Richard Kingson, first when he headed tamely into the Ghanaian's hands and then when the Blackpool keeper held a more substantial effort on the line.
Kingson somehow managed to save Roman Pavlyuchenko's back post header with the score at 2-0 with his legs, but just as Jermain Defoe look to hit it in on the follow-up, the keeper grasped on to the ball and keep it in his hands.