Leeds-born Tommy Spurr netted the winning goal to sink United at Blackburn Rovers.
Former Sheffield Wednesday and Doncaster Rovers left-back Spurr popped up in first-half stoppage time to volley home David Dunn’s corner, which gave Rovers their first league win over Leeds since September 2002.
Leeds manager Brian McDermott felt his side deserved something out of the game, which ended their run of three successive wins, and pointed to the first-half chance missed by Danny Pugh as a crucial moment.
Pugh was put through by Ross McCormack after 33 minutes but Jake Kean’s outstretched leg denied him.
McDermott said: “I didn’t think we deserved to lose. I think if we’d have scored in the first half we would have won the game. I thought first half an hour we controlled the game and looked very comfortable.
“They took the ascendancy in the last 15 minutes of the first half, scored the goal from a set-play which is obviously disappointing then it became a real battle and our players tried to get something from the game. It wasn’t pretty and we couldn’t quite do it which was disappointing.
“People miss chances. We worked it well and if that goes in it’s a different game. The first goal today proved to be the most important.”