Briggensians FC - based at Sir John Nelthorpe School - suffered defeat in their eleventh outing of the season.
Sadly, it was a whopping 10-1 reverse at the hands of leaders Shape Changers, who have now won all their nine games and have a very healthy goal difference of +70 (Briggensians are +9 in comparison).
Briggensians' consolation goal yesterday in the T.S.W. Printers Scunthorpe & District Football League third division tussle came from Stuart Briscoe.
On the mark for the visitors were Jack Crofton (4), Aaron Finnis (3), Chris Rodgers, Jack Finnis and the aptly-named Joe Winn.
It would be premature to say this result ends Briggensians' title hopes, but it has dented them considerably.
Another worry for the Brigg lads was the handsome 7-1 win achieved by third-placed A.F.C. Queensway against lowly Santon yesterday.
That means Briggensians and Queensway are level on points but the Scunthorpe side has a game in hand.
So this coming Saturday's clash between Briggensians and Queensway will have a real say in the hunt for promotion.
The match at SJN on February 4 kicks-off at 2pm.
Yesterday also saw defeat for Barnetby United's first teamers.
They lost 4-1 when hosting Brumby at the village's Silver Street ground in an E C Surfacing Ltd Sporting Shield Semi-Final.
Cameron Hill netted his 16th goal of the season for Barnetby, but Tom Wilson (3) and Daniel Rickets earned the Scunthorpe team a place in the final against College Wanderers, who yesterday saw off Epworth Town 2-1.
Saturday, February 4 will see Barnetby United Reserves returning to action in division three.
Fourth-placed Barnetby visit third-from-bottom Epworth Town Colts Blues.