Winning goal – 99 minutes 53 seconds
Sheffield United had seemingly engineered a shock away victory after soaking up pressure for long periods, with goalkeeper Wes Foderingham making several fine saves to back up Gustavo Hamer’s 73rd-minute goal.
But Richarlison headed Tottenham level eight minutes into stoppage time – with a further eight minutes remaining.
He then turned provider by picking out an unmarked Dejan Kulusevski to fire home from inside the penalty area in the 100th minute.
The result made it four wins and a draw from Ange Postecoglou’s first five league matches in charge – an unbeaten run which would extend to 10 matches.
Postecoglou was sacked last summer – 16 days after leading Spurs to the Europa League – while Kulusevski has not featured since 11 May because of injury.