United approached the contest knowing that a victory would send them three points clear in first place and establish a six-point cushion in the automatic promotion places with just three games left.
Pablo Hernandez's 89th-minute winner ensured Leeds did just that and the YEP's chief football writer Graham Smyth hands out the scores.
13. Gjanni Alioski (sub)
7 - Added forward momentum on the left for Leeds and kept Swansea on the backfoot. Dug in when the ugly side of the game needed doing.
14. Jamie Shackleton (sub)
N/A - The perfect player to put on when you need someone to run, quickly, after clearances and keep pressure on. Made a nuisance of himself
15. Gaetano Berardi (sub)
N/A
16. Keith Stroud (referee)
6 - Maybe sensed that the tension could boil over into ugliness and was therefore quick with his yellow card. Kept a lid on it. Missed a foul on Alioski, maybe conned once or twice by theatrics but refereed a difficult game reasonably well. Photo by James Chance/Getty Images