Speaking to the Lincolnshire Echo, Marriot said "The goal we conceded against Mansfield on Saturday was another example of some of the bad luck we have endured this season.
"I had lined the wall up perfectly, but when Russell took the kick, two players suddenly obscured my view.
"By the time I saw the ball, it was too late. You just can't legislate for things like that.
"It's been indicative of our season and I'm fed up of it to be honest because I pride myself on clean sheets."