Both sides were on unbeaten runs heading into the game, despite being at different ends of the table, but it was the Whites that came out on top thanks to goals from Patrick Bamford and Wilfried Gnonto either side of the break.
Wednesday gave as good as they got for large periods, but ultimately the visitors' quality shone through as they moved up to second place.
Here's how we rated the Owls on a difficult evening:
5. Pol Valentin - 5
Worked his socks off once again as he got up and down the right side, but unfortunately didn't have much joy up top and the opening goal came from his side. | Ellis / UGC
6. Liam Palmer - 5
Was pushed into the midfield again for this one and played his part well in the first half, but the goal rocked Wednesday and the second half was tougher. Came off with around 65 minutes gone. | UGC / Steve Ellis
7. Barry Bannan - 6
Tried desperately to make things happen for Wednesday in the centre of the park, but it wasn't to be. Like most was good in the opening stanza but not quite as effective in the second when Leeds stepped it up. | UGC / Steve Ellis
8. Marvin Johnson - 6
Worked tirelessly on the left side as Wednesday tried to make progress, but also put in some vital defensive work too. Probably gave Gnonto too much space for the second. | UGC / Steve Ellis