A Max Lowe own goal put Marcelo Bielsa's side ahead in the first half before Mateusz Klich missed a penalty after the break. Chris Martin then bagged in injury-time as United were made to pay for a number of missed chances. Here's how we rated the performance...
6 - Called into action once in the first half, a couple of times in the second. Made a meal of one cross, could do little with the goal.
7 - Superb in the first half, making run after run. Took the shot that led to the goal. Quieter second half, like many of his team-mates.
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6 - His energy helped Leeds force errors in the first half. Should have had an assist when he played Bamford in over the top.
7 - Comfortable first half, dominant off the ball. Only moment when his back line looked troubled was in injury time, when Derby scored.
7 - Won his first foot race with Marriott, wasn't otherwise troubled defensively in the first half. Second half stepped in when he had to, won headers. Solid overall.
8 - Delivered some terrific set-pieces, stepped in to make big tackles to stop Derby escaping Leeds' pressure. Rarely beaten, if ever.
6 - Found space in which to operate, played some clever passes. Influence on the game waned in the second half.
6 - Excellent on the ball, switching it with ease or playing clever little passes to put men in space. Another whose first half was better than his second.
5 - Quieter first half than last week, but showed some tidy touches in and around the Derby box. Unable to effect the game as much second half.
5 - Got into terrific positions, repeatedly, and yet couldn't ever deliver the ball Leeds needed.
6 - Another tireless display. Won headers, held the ball up, made good runs, won a penalty. Just didn't score. And should have, at least once.
5 - Failed to impact the game as he has done previously, off the bench, Had little joy on either flank.
5 - Not on for long, didn't have too much of an impact. Attack that led to the goal came down his flank.
N/A - Came on with little time left. Looked bright but had no sniffs of goal.