MK Dons put in a significantly sub-par performance as they went down 1-0 to Grimsby Town on Tuesday night.
Justin Obikwu scored the only goal of the game for the League Two strugglers, while Dons keeper Michael Kelly gave away but then saved a penalty to keep the hosts to just a goal lead.
Dons managed just one shot on target, despite keeping the ball for 79 per cent of the match.