Middlesex pair Leus du Plooy and Caleb Falconer shared a century partnership to delay Derbyshire’s progress as the visitors closed in on a rare County Championship victory at Lord’s.

Du Plooy hit 95 against his former county, while 19-year-old Falconer – playing in only his second first-class fixture – contributed 48 to their stand of 107, which ensured the home side wiped out a first-innings deficit of almost 200.

But Derbyshire’s bowlers stuck resolutely to their task, with Ben Aitchison and Rory Haydon picking up two wickets apiece in the day as Middlesex reached 278-8, an advantage of just 79 when bad light ended play.

On-loan Harry Duke remains unbeaten for a fine 31, but realistically it looks as though only rain on the final day can deny the visitors their first red-ball success in St John’s Wood since 2002.

Aitchison, whose Lord’s experience has already included a five-wicket haul and maiden hundred, looked dangerous again with the ball and beat the outside edge several times after Middlesex resumed at 13-1.

It was fellow seamer Haydon who achieved Derbyshire’s first success of the morning, tempting Ben Geddes to drive and the resulting thick edge was pouched by Wayne Madsen at slip.

Having pulled his first delivery to the rope at midwicket, Du Plooy soon settled into the groove, advancing out of his crease to the seamers as he and Max Holden began to whittle down the deficit.

The pair added 64 before Aitchison returned for a pre-lunch spell, bringing the ball back down the slope to trap Holden in front for 22, while Test spinner Shoaib Bashir extracted occasional turn in a tidy stint at the other end.

Du Plooy moved on past 50 for the fifth time this season while Falconer looked increasingly assured, straight-driving Aitchison to the boundary twice and stepping down the wicket to lash Bashir’s full toss over the top for four more.

Poor communication while running between the wickets almost proved costly, but Bashir’s shy at the stumps hurtled through for four overthrows after Du Plooy had embarked on a risky single to cover.

There was also a close call for Falconer, who gloved a rising Haydon delivery but the chance was fumbled by Brooke Guest and the pair brought Middlesex within eight runs of parity before departing in successive overs, both narrowly short of personal landmarks.

The captain was first to fall for 95, driving Martin Andersson to short cover where Bashir dived forward to grab it and Falconer then missed his chance for a first senior half-century, caught behind off Nick Potts.

That double blow halted the home side’s progress, although Duke cut Andersson for four to propel them into positive territory before tea and, with Ryan Higgins scoring productively off the back foot, their partnership reached 54.

But Higgins was undone attempting to pull Matthew Montgomery, the ball staying low to earn the off-spinner his first red-ball wicket for Derbyshire and Aitchison picked up his third of the innings when Zafar Gohar slashed outside off stump.

Eathan Bosch looked unlucky to be given out leg before to Haydon to leave Middlesex eight down shortly before darkening conditions, followed by a downpour, brought play to a close.