A second goal in as many games from George Byers gave the Owls a 1-0 lead at the break before substitute Sylla Sow doubled their advantage in the final 10 minutes to help them secure their first away win in five – and third win on the bounce for the first time since August.
Darren Moore’s side are now within just three points of the top six.
Here are our player ratings after a solid afternoon’s work in Staffordshire.
13. Sylla Sow - 7
Introduced off the bench for Mendez-Laing and poked home from close range to double Wednesday's advantage. Photo: Steve Ellis
14. Florian Kamberi - 6
Introduced in place of Byers but had little opportunity to influence proceedings. Photo: Steve Ellis
15. Ciaran Brennan - 6
Came on for Bannan late on and made a great tackle on the lively Chapman to halt a dangerous attack with the clock ticking. Photo: Will Matthews