Spireites had to do it the hard way after Darren Oldaker was sent off with Town leading 2-1 thanks to first half goals from James Berry and Dilan Markanday Charles Vernam pulled one back for Grimsby before battling Spireites saw the game out.
Our photographer Brian Eyre was there to capture these pics of some of the fans looking on. Take a look and see who you know.
Get more Spireites news, here.
1. Spireites 2 Grimsby 1
Chesterfield fans watched their side get a first home league win of the season. Photo: Brian Eyre
2. Spireites 2 Grimsby 1
Chesterfield fans watched their side get a first home league win of the season. Photo: Brian Eyre
3. Spireites 2 Grimsby 1
Chesterfield fans watched their side get a first home league win of the season. Photo: Brian Eyre
4. Spireites 2 Grimsby 1
Chesterfield fans watched their side get a first home league win of the season. Photo: Brian Eyre