Barnsley were beaten on home soil by Lincoln City on Tuesday evening.
A solitary goal in first half stoppage time from Daniel Mândroiu condemned the Reds to another defeat in Sky Bet League One.
The Imps barely saw any of the ball in the opening 45 with the Reds dominating both possession and territory, however, there weren't many opportunities conjured up by Michael Duff's side.
It was the away side who could, and possibly should have gone ahead a lot earlier than they eventually did, when Jack Diamond raced into the box on a lightning counter attack, only to see his low shot hit the base of Brad Collins' near post and bounce clear.
Barnsley were moving the ball around from one side to the other, with both Nicky Cadden and Tom Edwards putting over a number of crosses that failed to create anything notable.
A pot-shot from Josh Benson, a dragged effort from Herbie Kane and some improvisational stuff from Devante Cole were about all the Reds could muster as they searched for an opener.
However, it was the Imps who forged ahead, as Mândroiu latched onto a ball over the top, on the counter, to race beyond Cadden and fire low beyond Collins right on the stroke of half time.
HALF-TIME: Barnsley 0-1 Lincoln City
With a little more direct approach in the opening stages of the second half, Liam Kitching rose high to meet a Cadden delivery but saw his planted header easily clutched by visiting goalkeeper, Carl Rushworth.
The away side threatened twice more on the break, as Barnsley coughed up possession just outside their own box, but first Regan Poole cleared the bar before Ben House, a few minutes later arrowed a wonderful low effort that missed the far post by inches.
One of Duff's second half subs in Jack Aitchison did test Rushworth finally in the Imps goal, but his fizzing drive was straight at the 'keeper.
There was a further array of crosses and high balls thrown into the Lincoln box in the latter stages, but nothing came of them, as the Reds' poor form continued with this latest setback as we head towards the end of October.
FULL-TIME: Barnsley 0-1 Lincoln City
Collins, Edwards, Cundy (Aitchison), Andersen, Kitching, Cadden (Larkeche), Kane (Phillips), Benson (Jalo), Martin, Norwood, Cole.
Unused: Walton, Moon, Connell.