Deeping Rangers completed the double over Blackstones, winning 2-0 at Lincoln Road on Saturday afternoon.
Stones boss Dave Stratton had changed formation following a high-scoring 8-3 loss at St Ives on Saturday but an own goal from Tom Stocks put the visitors ahead after just four minutes.
Simon Ashton secured the three points for Rangers midway through the second half.
“I thought we competed much better on Monday,” said Stratton. “We went to a diamond and looked much more solid.
“It could have finished 15-7 at St Ives it was so open; we tried to shore it up a bit.
“Deeping were the better team but not far superior. Addie Staffieri and Chris Down forced two great saves.”
Deeping boss Tuncay Korkmaz said it was important for his side to pick up three points as they push Quorn for fourth spot.
“At 1-0 there is always a chance they could sneak one back but overall it was fairly routine. Their goalkeeper pulled off three great saves.
“We are two points off Quorn but anyone from fourth to Cogenhoe in eighth could go on a run.”
Rangers are unbeaten in five but have dropped points in a couple of recent games including a 1-1 draw at Yaxley on Saturday and Korkmaz, who side host bottom side Irchester United on Saturday, admitted: “We have not always been clinical enough.
“We have winnable games coming up. Irchester are mathmatically relegated and can relax and enjoy themselves and sometimes this kind of game can be nervy. An early goal would settle us.”
Blackstones, who only have four matches left this season, do not play again until the visit of Stewarts and Lloyds Corby on April 18 at Lincoln Road with a trip to Harborough just two days later and Stratton is not amused by the league’s fixture schedule.
“It is not fair on Blackstones FC,” he complained. “We have just had two massively tough games close together. We have no game for two weeks but then two in three days.”
Blackstones (v Deeping): Lee Crockett, Ben Easson, James Curran, Tom Stocks, Ben porter (Ben Mason), Danny Hotchkiss (Sam Strange), Luke Avis, Andy Boome (Chris Down), Jordan McLeod, Addie Staffieri, Andy Beech. Sub unused: Jake Van Der Drift.
Deeping (v Stones): Alex Street, Lawrence Lambley, Steve Julian, Spencer Tinkler, Simon Ashton, Ciaron Holt, Harry Deane (Jon Hands), David Burton-Jones, Kevin holt, Alex Beck (Tom James), Ryan Oliver (Scott Ginty), Matt Heron. Subs unused: Lewis Stone, Luke Wheeler.