Iliman Ndiaye scored a superb late winner as Championship side Sheffield United stunned Tottenham to progress to the quarter-finals of the FA Cup.
As the game looked to be heading to extra time, substitute Ndiaye weaved past a couple of defenders before beating Fraser Forster with a low strike at the near post.
Tottenham, who beat Chelsea at the weekend to boost their hopes of a top-four finish in the Premier League, looked off the pace as they struggled to test Blades goalkeeper Wes Foderingham.
Richarlison blasted a shot over the bar from close range but failed to make an impact, forcing Spurs to turn to Harry Kane as the second half wore on, but even the club's all-time top scorer was unable to really test a fired-up Sheffield United.