Boston Town are hoping to pull off the shock which will lift them out of the United Counties League Premier Division’s drop zone.
The Poachers travel to face in-form Desborough today at Waterworks Field.
Success, or even a draw - coupled with favourable results elsewhere - could see the Boston side climb out of the bottom two.
However, Town - who ended their 15-game winless run with a 3-2 county cup win against Holbeach on Wednesday - would have to do so, against an Ar Tarn side fourth in the table and unbeaten in eight matches.
Kick off will be at 3pm.