Three first-half goals kept Spalding United Reserves on top of the Peterborough & District League’s Division Two table.
Matthew Cannon, Matthew Hempsall and Jack Wycherley were on target before the break.
Ketton Reserves pulled two back but the Tulips are still four points ahead of Peterborough ICA Sports A who beat Pinchbeck United Reserves 6-2.
Spalding Town’s title bid in Division Three was given a boost by a 2-0 home win over Baston Reserves thanks to goals by Ben Holland and Martin Sandall.
The top-of-the-table clash in Division Five saw leaders Whaplode Drove go down 3-0 at AFC Stanground Reserves.
Lawrence Lambley got Pinchbeck’s leveller after Mindaugas Valys’ first-half goal for Crowland Town in the Premier Division.
Langtoft United slipped to their first defeat in five games in what manager Phil Gadsby described as “the worst game of football” he had ever witnessed.
The Vikings had the ball in the back of the net but Tom Glindon’s effort was disallowed for offside.
Thorney took the lead towards the end of the second half when a near-post corner was only half dealt with by Langtoft and when the ball was lifted back into the box Conor Pridmore hooked the ball over keeper Nathan Wicks.
Ten minutes from full-time Langtoft had half a chance to equalise when Dan Morris was played in on goal but his effort was smothered by Ben Derbyshire.
Gadsby said: “Had we not lost I’d describe that game as comical, it was the worst game of football I have ever witnessed.
“The pitch at Parson Drove is a complete disgrace. You can’t play any football on that type of surface – it was like watching The Dog and Duck versus The Fox and Hounds. That being said, we didn’t cover ourselves in
glory or stick to the game plan we outlined before the game and at half-time. I think a draw would have been a fair result.”
Holbeach Bank missed out on a place in the PFA Minor Cup final as they conceded four goals at home to Peterborough ICA Sports B.
On target were Mark Wyer (2), Lewis Bradley and Tom Wales.
ICA Sports B will take on Rutland DR who saw off Oundle Town Reserves 3-1 despite trailing at half-time.