In a contender for the worst 30 minutes of the season to date, Town went two goals behind and also lost two players to injury after heading into the game confident that they could continue their slow upturn in form and drag another side into the relegation scrap.
Northampton, with all three substitutes having been used by half-time, sensed they had little to lose after the break and almost immediately halved the deficit thanks to Izale Mcleod’s goal.
For twenty minutes it was one-way traffic but then an injury to Doumbe meant the Cobblers were reduced to ten men and Lewis made the game safe for the Chairboys with 10 minutes left before Morgan gave the scoreline a harsh gloss.
Update: The defeat has spelled the end for Aidy Boothroyd whose exit from the club was confirmed less than an hour after the end of the game.