Northampton boss Ian Sampson wants revenge on the Bulls for the pasting his side got at Sixfields in December.
Speaking to their official site he said: "Hereford are a decent team and they gave us a bit of a pasting here just before Christmas so I suppose we go there looking for a bit of revenge. Both Hereford and ourselves threw away leads on Saturday so I would expect the game on Tuesday night to be quite tight.
"I think we have come a long way as a team in the last couple of months and we are definitely a much better footballing team now than we were when we played Hereford in early December. The league table never lies and at this point in time the teams above us in the league are better than us but if we can get on another run then I'm sure we can move up the table.
"Time is running out on us a little bit now so we need to start another run as quickly as possible and hopefully we will do that at Hereford."
Sampson will have to decide who will replace the suspended Ryan Gilligan, who picked up a two game ban for ten bookings on Saturday, while fellow midfielder Liam Davis is hoped to be fit enough to complete 90 minutes.
Ex-Bull Steve Guinan will be one of three others to definitely miss the game along with Andy Holt and Chris Dunn, who had a knee operation to clear out cartilage damage.