Macclesfield put a dent in Chesterfield`s play-off hopes by recording a 2-0 win at Moss Rose.
The Shakers, who appointed manager Gary Simpson on a permanent contract in the week, took the lea in the 32nd minute when a wayward Lee Bell shot was converted at the far post by Emile Sinclair.
Five minutes later 18-year-old six-foot six-inch new boy Vinnie Mukendi scored his first goal in professional football when he poked home a Nat Brown cross.
Macclesfield were then indebted to keeper Jon Brain who made a superb point-blank save to deny Jack Lester before he plucked a Martin Gritton header from underneath the crossbar.
Chesterfield poured forward at the end but could not find a breakthrough with a deflected shot from Ishmael Demontegnac leaving Brain stranded but spinning inches past the upright.
They thought they had found a way back into the game when a Jordan Bowery volley hit the post and appeared to creep over the line only for the Spireites` frantic protests to be waved away by referee Darren Sheldrake.
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