GRIMSBY Town midfielder Scott Kerr says they must iron out the defensive errors after losing 3-0 to local rivals Scunthorpe United this afternoon.
Two goals from set-pieces - the first from David Mirfin and another from Sam Winnall - were added to by a freak third from Deon Burton, to inflict the Mariners' first defeat of pre-season.
Although Kerr saw plenty of positives to take from the game, he insisted that there is work to do ahead of the start of the season on August 10.
Click the video below to listen to Kerr's thoughts after the game.
