THE Mariners will play League One side Peterborough United in a pre-season friendly game next month.
The Posh finished ninth in League One last season, narrowly missing out on the play-offs.
They are currently managed by former Youth team coach Dave Robertson, with Barry Fry now in the post of Director of Football at The ABAX Stadium.
This game at Blundell Park will take place on Tuesday 28th July, kick-off 7.30pm.
Link: Pre Season Fixtures