Ashley-Seal scored the only goal of the game in the first half in Northampton’s victory in the England League Two, as they beat Port Vale 1-0 (1-0) at home.
Northampton took an early lead when Bernard Ashley-Seal scored after 23 minutes, making it 0-1.
In the next round on Saturday, Northampton face Colchester away at Colchester Community Stadium, while Port Vale host Tranmere.