Port Vale scored a goal in each half to maintain their League Two play-off bid with victory at Northampton.
John McCombe put Vale ahead early on when he headed Doug Loft's cross in at the far post.
Matt Duke produced two fine saves to keep the Cobblers in the game but Sean Rigg doubled the hosts' advantage when he rounded Duke to slot the ball home.
Adebayo Akinfenwa finished from close range for the hosts after good work from substitute Jake Robinson.
VIEWS FROM THE DRESSING ROOMS
Northampton Town manager Aidy Boothroyd told BBC Radio Northampton:
"Well I think we got what we deserved. You can't play any fixture in any league and only start playing with 15 minutes to go.
"I though that from the start they played at League Two match pace and we played at testimonial pace.
"We knew how to deal with them but we didn't stick to the game-plan. We were powder-puff too often and when you're like that you don't win."
Port Vale manager Micky Adams told BBC Radio Stoke:
"First half we were terrific, their keeper had to make some great saves to stop them from going in two or three goals down.
"I can't say the transfer embargo has been easy but I've seen it all before, I'm not a young manager who's never seen anything or is phased by it.
"My focus is trying to keep the players away from it as best I can and try to keep them focused on getting results."