Matty Warhurst’s fine finish was the least Cobblers deserved for a dominant first half display. They had to survive a period of Grimsby pressure either side of half-time but Jon Guthrie poked in a second to secure all three points. Here are our player ratings from Blundell Park...
1. Zach Jeacock
A third clean sheet of the season and he made a significant contribution to it. Kept out Morgan midway through the first half but his best work came just before the break, brilliantly thwarting Amaluzor and blocking from Green at close-range. Enjoyed celebrating at full-time and rightly so...7.5 | Getty Images
2. Janoi Donacien
The right-sided centre-back role suits him so well. He has the pace to recover when balls go in behind the defence but he's also strong physically and technically sound. Almost scored, his header cleared off the line. Lasted most of the distance too, only withdrawn at the end of the 90... 7.5 | Getty Images
3. Elliott Moore
Grimsby had a strong spell either side of half-time but otherwise he stood strong. Incredibly calm and composed and repelled the aerial threat. Assisted Guthrie's second when peeling around the back and nodding Evans' corner across goal. Went close himself in the first half... 7.5 | Getty Images
4. Jon Guthrie
Won his aerial duels and made important clearances and tackles. Popped up with his 17th goal in Cobblers colours and it came at a crucial time, doubling the lead just as Grimsby were threatening an equaliser... 7.5 | Getty Images