The Harry the Haddock mascots were out in force at St Mary’s earlier this month as Grimsby beat Southampton to progress to the FA Cup quarter-finals. The away fans held aloft a sea of inflatable fish in the stands as their team pulled off one of the biggest shocks in recent years. Grimsby became the first side in the 151 years of the FA Cup to beat opponents from higher divisions in five rounds, having already taken care of three League One clubs – Plymouth Argyle, Cambridge United and Burton Albion – and Luton Town from the Championship.
Grimsby, who are 16th in League Two and only…
