Chesterfield welcome Swindon Town to the Proact, the hosts sitting just one place below the Robins in the League One table.
After a run of five wins in six matches Town, like the Spireites, have stuttered of late, with two draws and two losses in their last four games.
However, in striker Michael Smith the Robins have a man in form. The 23 year-old's brace in Saturday's home draw with Colchester United took his season tally to eight goals, and he'll be looking to add to that total at the Proact.
After the Spireites' first back-to-back losses in a year manager Paul Cook insists his team will go out to attack and to beat their Tuesday evening opponents.
He said: "We'll pick a very attacking team to try and beat a very strong Swindon team. That's the job, I've said for a bit now that the balance in our team isn't right and I still maintain that today.
"The balance being the individual players within our group: who's going to pass to Doyle to score? Who's going to link up with Clucas? Who's going to keep goals out?
"These are all the little patterns in the team and my job along with the other members of the coaching staff is trying to get these things right."
After the loss at Walsall the Spireites have now lost by just a single goal in all five of their league defeats and Cook senses Tuesday's match as being pivotal to which way eyes will be glancing for the remainder of the season.
He said: "In the space of a blink we've all just lost our wavelength a little bit. Swindon are a very strong team, but this league is about what you do.
"This is a massive game for us tomorrow night because if we win we look at the elite teams going up and if we lose we start looking down.
"If we win tomorrow and then beat Yeovil on Saturday we could be back in the playoffs- and then we'll get carried around the town because of how good we are. But if we lose the next two I'll be looking over my shoulder!"
Having come off the bench at Banks's Stadium on Saturday, talismanic forward Gary Roberts will miss the match with former side Swindon as he's given the time needed to recover properly from his hamstring injury.
Cook said: "I showed a bit of loyalty to Gary on Saturday because I love him. Gary got brought in at a time when this football club needed a lift and I look back to the goals against Fleetwood and certain goals last year when we won the league and he deserves that loyalty.
"He won't be back for a couple of weeks now, because he's got to get right. It can't be stop-start, we must get momentum and we must pick the same team for a bit."