Chesterfield outclassed rival play-offs challengers Port Vale to move within just a single point of the top six.
Armand Gnanduillet opened the scoring in the 13th minute with a header. The club’s top scorer Eoin Doyle doubled the advantage on the hour before Charlie Raglan’s first goal for the Spireites completed a comfortable 3-0 victory.
It was an impressive showing for the home side, who remained in 7th position as they moved six games unbeaten.