Both Spalding United and Holbeach United suffered defeats on Saturday, while Pinchbeck United and Moulton Harrox recorded victories to keep their respective title charges alive.
Starting with Spalding, they slipped to a 1-0 home defeat against fellow Evo-Stik NPL First Division South high-fliers Witton Albion.
In a game of few chances at the Sir Halley Stewart Playing Field, a fine first-half winner from Bradley Bauress (11) was enough for the second-placed visitors.
The Tulips remain third in the table and have a seven-point cushion from their other play-off rivals.
In the ChromaSport UCL Premier Division, Holbeach United slumped to a disappointing 3-0 defeat at mid-table Wellingborough Town.
Jack Wisniewski and Adam Speight gave the Doughboys a 2-0 lead at the break, with Jake Gillingwater rounding off the rout after the interval.
The loss sees Holbeach slip to ninth in the table.
In the ChromaSport PDFL Premier Division, Pinchbeck United beat title rivals Netherton United 2-1 at Knight Street thanks to goals from Ollie Maltby and Liam Ogden – the latter with a winner ten minutes from time.
Ian Dunn’s side remain four points behind leaders Peterborough Sports Reserves in second.
Moulton Harrox are third, three points further back, after a 2-1 home win over Langtoft United.
Also in the top flight, Holbeach Reserves beat Uppingham Town 6-1 and Crowland Town drew 0-0 at Wisbech Town Reserves.
In Division One, a Matt Cawthorn hat-trick inspired Long Sutton Athletic to a 7-0 win over Stamford Belvedere.
Leaders Moulton Harrox won 5-3 at third-placed Warboys Town to make it 23 games unbeaten, while second-placed Sutton Bridge United went down 4-1 at home to Whittlesey Reserves.
First Division South: Basford United 1 Gresley 0; Carlton Town 0 Bedworth United 0; Chasetown 0 Sheffield FC 0; Leek Town 0 Belper Town 1; Market Drayton Town 2 Lincoln United 1; Northwich Victoria 1 AFC Rushden and Diamonds 4; Romulus 0 Rugby Town 3; Shaw Lane AFC 2 Newcastle Town 1; Spalding United 0 Witton Albion 1; Stamford 1 Kidsgrove Athletic 1; Stocksbridge Park Steels 4 Loughborough Dynamo 2.
Premier Division: Deeping Rangers 3 Eynesbury Rovers 0; Harrowby United 1 Newport Pagnell Town 2; Kirby Muxloe 7 Huntingdon Town 2; Leicester Nirvana 3 Boston Town 4; ON Chenecks 3 Harborough Town 2; Rothwell Corinthians 1 Peterborough Sports 4; Wellingborough Town 3 Holbeach United 0.
KO Cup: Desborough Town 2 Wisbech Town 2 (pens 1-4).
Premier Division: Holbeach Utd Res 6 Uppingham Tn 1; Leverington Sports 0 Ketton 2; Moulton Harrox 2 Langtoft United 1; ICA Sports 0 AFC Stanground Sports 2; Peterborough Sports Res 2 Sawtry 0; Pinchbeck United 2 Netherton United 1; Stamford Lions 3 Deeping Rangers Res 1; Stilton United 0 Thorney 4; Wisbech Town Res 0 Crowland Town 0.
Division One: Glinton & Northborough 1 Oundle Town 3; Kings Cliffe 2 Oakham United Res 2; Long Sutton Athletic 7 Stamford Belvedere 0; Netherton United Res 3 Baston 3; Sutton Bridge United 1 Whittlesey Athletic Res 4; Warboys Town 3 Moulton Harrox Res 5; Wittering Harriers 3 Spalding United Res 2.
Division Two: Crowland Town Res 4 Parkway Eagles 3; Ketton Res 0 Ramsey Town 3; Langtoft United Res 6 Netherton United A 1; Spalding Town 0 AFC Stanground Sports Res 6; Tydd St Mary 1 Stamford Lions Res 1; Whittlesey Athletic A 3 Leverington Sports Res 1.
Division Three: AFC Stanground Sports A 7 Whittlesey Athletic B 1; Sawtry Res 7 Rutland DR 2; Stamford Belvedere Res 0 Brotherhood Sports 3; Uppingham Town Res 0 Farcet United 4.
PFA Junior Cup: Whaplode Drove 3 FC Peterborough 4; Oundle Town Res 0 Bretton North End 7.
Division Four: FC Peterborough Res 1 Cardea 10; Netherton United B 4 Tydd St Mary Res 2; Parkside 5 Long Sutton Athletic Res 1; Premiair 7 Wittering Harriers Res 0; Whittlesey Athletic C 1 Holbeach Bank 3.
Division Five A: Feeder Res 2 Eunice Huntingdon 3; Peterborough NECI 6 Orton Rangers 2.
Division Five B: AFC Orton 9 Leverington Sports A 0; British SoS 2 Kings Cliffe Res 2; Riverside Res 9 Wisbech Town Acorns U21 4.