It was a weird game of football, with Wednesday probably edging the tie for over an hour, but after Matthew Pearson opened the scoring it all went to pieces. Over the space of 12 minutes Danny Röhl's side were knocked to the canvas, and it's a result that has hit their survival hopes hard.
Two goals from Josh Koroma either side of Sorba Thomas' strike put paid to Wednesday getting anything out of this one - and they now find themselves eight points adrift of their Yorkshire rivals.
Here's how we rated the Owls on a horrific afternoon at the John Smith's Stadium:
Here's how we rated the Owls on a horrific afternoon at the John Smith's Stadium: