Goalscorers Charlie Goode and Callum Morton were among many impressive performers at Blundell Park. Here are our player ratings...
9. Mark Marshall
Saw a lot of the ball in the first-half and although he didn't always make the most of it, he constantly got at Grimsby's defence and kept putting crosses into the box, trying to create something for his side... 7.5 | Getty Photo: Pete Norton
10. Callum Morton
Outstanding again. Now five goals in six games for the Cobblers after another very well-taken brace here. Second goal was reward for his pressing of Grimsby's defenders, something that he did all afternoon... 9 CHRON STAR MAN | Getty Photo: Pete Norton
11. Vadaine Oliver
Not overly effective as Town's chief threat came more from counter-attacks and through their pace in wide areas, rather long balls into their tall striker. Worked hard though and was a good foil for Morton... 7 | Getty
12. Chris Lines
Continued the good work of his team-mates during his half-hour on the pitch as Cobblers managed the game well in the second-half... 7 | Getty Photo: Pete Norton