Peterborough must wait until the final day of the season for their fate to be settled, no matter how this weekend’s results pan out.
The fourth-from-bottom club could lose to Wednesday and still have a chance of staying up before going to Crystal Palace a week tomorrow.
They currently have a better goal difference than Wolves and Barnsley, with whom they are level on points.
Manager Darren Ferguson said: “I’ve always said it will go down to the last game and now it has to for us, at least.
“But I honestly believe we are in a very good place, purely because it looked for half the season that we would be relegated by now.
“My players have worked wonders to get where they are and I sense around the place a determination not to waste the opportunity they’ve given themselves.”
Peterborough were unbeaten in 10 games before they lost 3-1 at Derby last week.
Ferguson added: “I’ve already written the Derby game off. It’s a fantastic effort for any club to go 10 games unbeaten in this division, so my players should be proud of what they achieved.
“We were always likely to run into a side in top form and Derby were excellent on the day and deserved to beat us, but that sort of thing happens and now it’s about bouncing back.
“We kick off later than everyone else this Saturday, but that shouldn’t make any difference. We have to beat Sheffield Wednesday no matter how the other results have gone.
“It won’t be easy as they will present a serious physical challenge, but we’re all looking forward to the challenge. I’m excited rather than worried.”