Title rivals Pinchbeck United and Netherton United meet at Knight Street on Saturday (2pm kick-off).
Ian Dunn’s side are looking to extend their advantage over fourth-placed Netherton.
And they could claim a psychological blow ahead of the President Premier Shield final as well.
The sides meet again as Pinchbeck defend the trophy on Friday, May 12 (7.15pm), at Peterborough Northern Star’s ground.
Last weekend, Pinchbeck recorded a 15th successive win in the Premier Division.
Ollie Maltby took his tally to 49 goals in 25 appearances so far this term with another hat-trick.
Leverington Sports were level at the break but Maltby put Pinchbeck 2-1 up just two minutes after the restart.
He completed a treble late on and there was still time for Tyler Wright to make it 4-1.
Meanwhile, Netherton’s cup final place was sealed with a 3-2 home victory over Moulton Harrox.
Marcus Parry and Ashley Coddington out Harrox 2-0 ahead after 10 minutes.
Tommy Randall pulled one back, captain Ben Panting converted a controversial penalty and Randall slotted a second-half winner.