Everyone knows Ernie Moss is an icon on both sides of the M1 corridor, but here are 17 others you might not remember playing for both clubs.
Take a look and see how many of these you remember.
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17. Colin Larkin
Colin Larkin is one the rare breed of players who moved directly from one club to the other. After a three season spell with Mansfield, between 2002 and 2005, Larkin moved up the A617 after an apparent fall-out with Mansfield boss Carlton Palmer. Photo: Getty Images

18. Tom Curtis
Tom Curtis played 240 times for Chesterfield, including in the club's iconic 1997 FA Cup semi-final match against Middlesborough. After a move to Portsmouth didn't work out, he came back north and played 93 times for Mansfield between 2002 and 2005. Photo: Getty