If the Millers stick to form then it is not going to be a straightforward evening so supporters should come ready to be put through the wringer.
Here is five things to look out for in the game.
The finishing line is in sight
The equation is simple. If Rotherham beat Reading then they will have guaranteed their place in the division for next year. A Football League points deduction, a late-season rally from Millwall and Wigan, thrown points away by the Millers and a burning sense of injustice from refereeing decisions will count for absolutely nothing. It's an enticing prospect and surely one that most people would have accepted that at the beginning of the season, but especially given Friday's events. A draw would mean they have to go to Elland Road and get something to be sure of their safety. In that sense, it's a massive game and probably for just one of a few times this season, the pressure and expectation will be on the Millers to win. How well they handle that will be vital to the end result.
Three in a row
In its first two seasons as the Millers' new home, the final game of the campaign has provided moments for mass celebrations, pitch invasions and dancing managers. In the inaugural campaign promotion to League One was secured on the final day and then last year the Millers booked their place in the play-off final at Wembley. Now on the final home game of an undulating term there is the opportunity for another celebratory send-off. Although it's unlikely to get Steve Evans jigging in the directors' box again, arguably safety is an achievement that would be worth celebrating more than either of the previous two year's efforts. Getting that win seems a lot more fitting reason for fans to show their appreciation at the end of a home campaign rather than with the Millers' fate still undecided going into the last day.
Will Reading have read the script?
The list of reasons why the Millers will fancy their chances against Reading is a compelling one. The Royals have won just one of their last 10 league games, they have nothing to play for, they are coming up against a side with a golden prize within touching distance, it's a long midweek trip and they won't have many fans watching them. All of this probably makes them very dangerous. Everyone will be fancying the Millers for this one, but if there is even the tiniest amount of complacency shown, then they could get a shock. Despite their form, Steve Clarke's men cannot be written off - they recently matched Arsenal for 120 minutes in the FA Cup semi-final and they have top quality players throughout their squad. This is the Millers' biggest game of the season and they have to treat it like that - that's invariably when they are at their best.
After the Lord Mayor's Show
Given the Millers' monumental effort shown on Saturday to drag themselves off their knees and hit back for a deserved draw, there could easily be a flatness on Tuesday, especially after the emotions that everyone went through at the weekend. We have seen it on several occasions already this season, with the game against Cardiff coming just days after that highly-strung win against Millwall acting as a particular red flag. There was such an intensity about Saturday afternoon, with a full away end and all the drama of knowing Millwall were winning, that it could be difficult to replicate that again on a Tuesday night with barely any visiting supporters present. The hope is that the prize on offer for the Millers negates any comedown from the action on Saturday.
Will there be changes?
Steve Evans kept an unchanged side for just the ninth time of the season against Norwich and he has a decision to make for this clash with Reading. Danny Ward looked to have taken a knock to his ankle and his replacement Jordan Bowery scored the leveller after putting the chance on a plate for Matt Derbyshire. Bowery has been more of an impact player this season rather showing any threat from the start, but Evans admitted he has been "electric" in training and could unleash him from the off against the Royals. Similarly, Adam Hammill came off the bench and set up Bowery's goal following a poor performance by Ben Pringle, though, his impact was a little more fleeting. Evans will have a big decision to make, with such a golden prize on offer.
