Cobblers impressed before half-time but fell to pieces in the second. Check out a very mixed set of player ratings here...
5. Jordan Turnbull
His dogged work off the ball laid the platform for Cobblers' first-half dominance but couldn't sustain it after the break and it was his ill-advised pass that allowed Walsall to break for the winner... 6
6. Ryan Watson
Ran things during an excellent first-half display. Got on the ball, made smart decisions and drove forward on occasion. More of a struggle when it was wind into face in the second but still had a good game... 7 Photo: Pete Norton
7. Paul Anderson
His sensational cross saw Morton double the lead and that really should have sent all three points back to Northampton. Not the only time he teed up the young striker and was unfortunate to be hooked so soon after half-time... 7 Photo: Pete Norton
8. Nicky Adams
Created Morton's opener and should have added another assist for the same man when his cross was just begging to be turned in. Worked tirelessly for 75 minutes and that showed during a weary last 15... 7 Photo: Pete Norton