Burnley were hit by a first half sucker punch as Sheffield Wednesday edged a tight affair at Barnfield.
The Clarets enjoyed good spell of possession in a game of precious few goalscoring chances.
But the Owls nicked it through Ash Baker’s poached effort on the half hour, after the hosts failed to deal with a routine cross from the left.
Michael Duff’s side came into the contest on the back of two wins in three league games, and started brightly, with Ntumba Massanka shaking off his marker and firing over from distance.
Controversy followed when Stephen Duke-McKenna was unceremoniously hauled back by the shirt when clear on goal by Freddie Nielsen.
However, inexplicably, the Owls defender was only shown a yellow card, and was soon substituted by the visitors.
And soon after, Burnley fell behind as Baker smuggled the ball home as Ali Koiki delayed his clearance with his back to goal.
Wednesday, with returning Scottish midfielder Barry Bannan in their ranks, quickly began to exert their authority and Connor O’Grady was inches away from doubling the lead before the break.
Massanka almost put the Clarets back on terms six minutes after the restart, with an acrobatic overhead kick as a free kick dropped to the striker in the box.
But despite increasing amounts of possession as the half wore on, the Clarets could not carve out the chance they craved to salvage as point.
BURNLEY: Stone, Cropper, Koiki, Trialist, Younger, Wilson, Bayode (Nabi 56), McNeil (Wood 70), Massanka, Duke-McKenna (Jackson 56), Chakwana.