Chesterfield may have had the one-man advantage at the start of the second-half but they were certainly not making the most of it and gave possession away far too often. Dean Bennett - just too high from long range.
Harriers midfielder Bennett strode forward on 51 minutes but his 30-yard drive drifted over Abbey's bar.
Blake blazed another shot from distance over the bar on 57 minutes as Harriers continued to cope well with 10 men.
Reeves flicked an Ingledow free-kick wide two minutes later as the home side fought back.
Then moments later Clarkson got a decisive touch to D'Auria's threatening right-wing cross to put the ball behind for a corner which came to nothing.
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