Grimsby manager Graham Rodger feels his players were tired as they went out of the Johnstone's Paint Trophy with a 3-0 defeat at Mansfield Town. Rodger told BBC Radio Humberside: "The effort that went into Saturday's game was always a concern and we were a little bit low on fuel.
"The difference in performance from Saturday to Tuesday was marked, and that was the most disappointing thing.
"We need to make turn up and give a Peterborough type display on Saturday."