Barnet manager Paul Fairclough has called on his players to battle their way out of trouble.
The Bees are back in the bottom two after Saturday's 2-0 defeat by Southend, a result which brought an abrupt end to a four-match unbeaten run.
They were denied a chance to climb out of the drop zone when Tuesday night's trip to Aldershot was called off at half-time due to fog with the score at 1-1, and now face a trip to a Northampton side who put six past Crewe last time out.
"We need to start performing when we are under pressure," said Fairclough.
"No-one is going to help us, apart from ourselves."