Stephen McLaughlin scored the game’s only goal in the first-half. Here are our player ratings from Sixfields...
5. Ali Koiki
Had ample opportunity to demonstrate his attacking exploits as Mansfield sat off but didn't have his best night, often taking too many touches and turning back instead of driving forward... 6 Photo: Shaun Botterill
6. Shaun McWilliams
Seemed to be everywhere. Incredibly busy and tenacious. Played with tons of energy and spirit and did not stop running. Brilliant out of possession and never once hid from trying to get on the ball and drive Cobblers forward. The standout performer in claret in both legs. Any scouts watching wouldn't have been put off... 8 CHRON STAR MAN Photo: Pete Norton
7. Jack Sowerby
Took more of a back seat with his midfield partner the dominant force in the middle. Looked to push on and took a couple of shots that were well blocked... 6 Photo: Pete Norton
8. Mitch Pinnock
He put so many balls into the penalty box but a Mansfield head or foot always seemed to get there first. The visitors were effective in limiting his influence across both legs... 6 Photo: Pete Norton