Stags arch-enemies are now condemned to a fourth season in non-league and, with clubs like Grimsby Town, Southend United, the leading clubs that don't make it up this season and a Wrexham side backed with Hollywood A list money to contend with, it's not going to be any easier for the Spireites to return from exile.
Chesterfield, like the Stags, are finding out just why many consider this the hardest league to go up from in the football pyramid aside.
As a thank you to Notts, how many Stags fans will now want them to go all the way and get promoted to bring at least one local derby back on the calendar?
It was certainly another fantastic example of how good play-off football can be – full of twists and turns and incident.
Derby County boss Liam Rosenior has high praise for Mansfield Town after winning Carabao Cup thriller
Mansfield Town boss Nigel Clough proud of players and fans as Stags are pipped by Derby County in Carabao Cup classic
Battling 10-men Mansfield Town push neighbours Derby County all the way in thrilling Carabao Cup exit
See who you can pick out in our fans gallery from Mansfield Town v Derby County
We are a match for anyone at our level believes Mansfield Town midfielder George Lapslie after Stags push League One giants Derby County all the way in cup clash
County had to twice come from behind before Mark Ellis headed a last minute winner when Chesterfield's keeper, crocked since the hour mark and stuck on the pitch with no sub keeper on the bench, was unable to come out for a late free kick.
A decent weekend of football then continued with a look at some of the other England squad members and contenders in the 1-0 friendly win over Romania.
With one last place up for grabs in the final squad due to Trent Alexander Arnold's injury, it was Brighton's young player of the year, defender Ben White, who got the nod.
It was no great surprise a defender replaced a defender in the squad – he is also extra insurance against Harry McGuire not being able to prove his fitness.
But, although I thought it was a bit too soon for new boys Ollie Watkins and Ben Godfrey, I really feel for James Ward-Prowse and Jesse Lingard – and poor Patrick Bamford – who have shown this season they have every attribute to be part of the squad.
Boss Gareth Southgate will live or die by the decisions he has made and the bookies are certainly backing him, England remaining favourites to win a major tournament for the first time since 1966.