The visitors, for whom chairman Ken Bates has insisted that promotion is a must this season, have now gone four games without a win.
Vaz Te began the afternoon on the bench, but took his chance superbly after being thrust into the action on 15 minutes following an injury to Jacob Butterfield.
Leeds could have taken the lead as Andy Keogh went close with the scoreline still blank, but his team were comprehensively beaten and the match finished with home fans questioning whether visiting boss Simon Grayson would keep his job.
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