Tranmere upset the form book as they continued their improvement under new boss Brian Little with a 1-0 win at Grimsby.
Gary Jones's scrappy 70th minute strike earned Rovers their first away win of the season as Grimsby shot themselves in the foot.
Tranmere unashamedly played for a point pulling most of their players back every time Grimsby attacked.
But when a Grimsby corner broke down Tranmere had men to spare and a quick brought the only goal. A cross from Micky Mellon was flicked on by Eugene Dadi for fellow striker Jones to bundle the ball past a strangely hesitant Aidan Davison in the Grimsby goal.
This caused Grimsby to go even more attack-minded, but the closest they came to an equaliser was with virtually the last kick of the match.
The Mariners won a free-kick just outside the box and sub Phil Jevons forced the first real save of the game out of Tranmere keeper John Achterberg.
For defending brilliantly and then taking their only real chance Tranmere deserved the point, but it was a real horror show from Grimsby who have thrown away five of their last six points at home.
The wet and windy conditions made it difficult, but Grimsby, who should have been full of confidence after last week's 3-1 win at Brentford, never got to grips with the elements or had the quality to prize open Tranmere's packed defence.
Twelve-goal leading scorer Mick Boulding had a rare off day and Grimsby could just not carve out enough chances to get something out of the game.
Grimsby now turn their thoughts to next week's FA Cup second round tie at Peterborough and, after their last two home results, they will probably be glad to be travelling to a side yet to win at home in the Second Division.