Backache, another Grimsby defeat and Lee Hughes spoiled Hannah Cawsey's day.
Grimsby chairman John Fenty has reiterated the board's backing for under-fire manager Mike Newell.
Grimsby Town have completed the permanent signing of Darlington striker Adam Proudlock.
Mike Newell wants to keep loanees Jean-Paul Kalala, Rob Atkinson and Adam Proudlock at Grimsby.
Mike Newell has played down the chances of Grimsby bringing in any new loan signings.
Grimsby have snapped up Adam Proudlock on a two-month loan deal from Darlington.
Adam Proudlock has joined ex-Stockport team-mates Adam Griffin and David Poole at Darlington.
Jim Gannon has released nine players following Stockport County's promotion to League One.
Darlington climbed to the top of the table after securing a comfortable 2-0 win away at Rotherham.