Town were beaten 3-1 to leave them four points above the relegation places.
That gap could be cut further on Tuesday night with Peterborough United playing Stevenage in a game in hand.
Victory at home would mean Peterborough climbing out of the bottom four at the expense of Exeter City.
Elsewhere, Port Vale are in desperate need of a win and in danger of getting cut adrift after failing to win any of their last six.
Plymouth, who host Cobblers next Saturday, picked up a crucial win in a six-pointer at Port Vale while Blackpool have perhaps lost their new manager bounce with two wins followed by a defeat and a draw.
So who are the current favourites for relegation? Here are the latest odds courtesy of SkyBet.
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