Notts County have the edge in their League Two play-off semi-final after a 1-0 win in the first leg at Chesterfield.
An early penalty miss from Lee Bonis proved costly for the Spireites, with Jayden Luker striking later in the first half at the SMH Group Stadium to seal a narrow victory.
It leaves County with the advantage heading into their second leg at home on Friday night.
Chesterfield could have gotten off to a dream start when Liam Mandeville was tripped in the box and the referee pointed to the spot, only for Bonis to rattle his effort off the woodwork.
Notts County took advantage just before the half-hour mark, as Tom Iorpenda fed a cross in for Luker to finish at the back post.
And that would prove to be the crucial moment in the first half of this tie.
