Georginio Rutter earned Leeds a 1-0 victory against Sky Bet Championship leaders Leicester as Daniel Farke’s side took another step towards challenging the top two.
The result still leaves Leicester 11 points clear of Leeds in third place, but this will be seen as a statement victory against a side who have dominated the division this season.
Abdul Fatawu hit the crossbar in the first half, and Leeds goalkeeper Illan Meslier produced a superb save to keep out a stoppage-time header from Kiernan Dewsbury-Hall. But Leicester had just one shot on target while suffering their second home defeat of the campaign.
Leicester, five points clear at the top, had been chasing a 10th successive victory and were looking to equal the best-ever start to a second tier season since Bristol City in the 1905-06 season.
But Leeds took on Enzo Maresca’s side head-on. They were rewarded when Rutter netted after 57 minutes with a goal that proved to be the winner.
Leicester found themselves under pressure early on, something they have not been used to at the King Power Stadium this season.
But Leeds, who were also relegated from the Premier League last season, caused Leicester problems and looked in confident mood.
Joel Piroe carved out space in the Leicester area after only two minutes, but he curled his shot wide of the target.
Maresca’s side began to find some momentum and the game suddenly switched from one end to the other as Fatawu raced in from the right and unleashed a powerful shot which shook the crossbar.
Leeds immediately moved into the Leicester area and Crysencio Summerville went down under pressure from Leicester’s Ricardo Pereira.
Referee Dean Whitestone waved away all appeals, much to Farke’s anger. He made his feelings known in the technical area, with his protests seeing him shown a yellow card.
Leeds continued to put pressure on Leicester after the break and goalkeeper Mads Hermansen could only parry a Piroe shot, but there was no-one to take advantage of the loose ball.
Leeds who broke the deadlock when a Daniel James corner was met by Sam Byram’s header, which was pushed out by Hermansen. The Dane may have got lucky moments earlier, but this time the ball fell into Rutter’s path and he scored from close range for his third of the season.
Maresca had been planning to take off Jamie Vardy and replace him with Kelechi Iheanacho as the goal went in, a move which then happened with Leicester a goal down.
Leeds threatened a second with 17 minutes to go as James broke clear, but his low drive was smothered by Hermansen.
Leicester laid siege to the Leeds goal in the closing stages, but could not find the equaliser.