Benny Ashley-Seal scored the only goal of the game as Vale lost goalkeeper Lucas Covolan to a second-half red card. Here are our player ratings from Sixfields. ..
5. Joseph Mills
Given the nod over Koiki and justified the decision with an excellent showing at left-back. Answered all questions that came his way... 7
6. Paul Lewis
One burst into the box was the highlight of a steady midfield display. Didn't do anything spectacular but kept things ticking over. Should be plenty more to come... 7
7. Jordan Flores
Struggled in the opening moments as Vale smothered the Cobblers with early pressure, but improved later in the contest and helped keep possession away from the visitors when they were down a man... 6.5
8. Dylan Connolly
Exciting and frustrating in equal measure, which might be a recurring theme this season. Largely positive on debut though, his pace alone creates problems for defenders... 6.5