Leeds picked up their first victory in the Premier League this season as defender Diego Llorente returned from injury to score the winner over Watford.
Llorente, who picked up a hamstring injury in the defeat by Liverpool, instinctively poked it in from close range after a corner delivery bounced off Watford's Juraj Kucka at the back post.
It capped off a dominant first-half display from Leeds but failure to take their chances made for a nervy ending.
Watford, who were sloppy in possession and passive for large parts of the game, had a goal ruled out in the second half for a foul in the build-up after goalkeeper Illan Meslier's fumble almost proved costly.
But despite the narrow scoreline, Leeds were comfortably the better side, leaving Elland Road with three points for the first time this season.
Afterwards, Leeds manager Marcelo Bielsa said: "We defended well and the result even though it was only a one-goal difference was never in danger.
"We should have scored more goals because we had a lot of chances - at least 10 - in the second half, perhaps a little bit less, but I thought it was a fair result. The difference could have been bigger.
"[Diego Llorente] had a performance without any errors with a lot of good things while defending and distributing the ball.
"Jamie Shackleton had a good performance. We didn't make errors in our own half, we didn't allow counter-attacks and even if we lacked efficiency, we had patience to see how we could generate chances at goal."
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