Chris Wilder insists the Blades must be right at it, if they are to take maximum points from Tuesday's clash against Burton Albion.
Speaking ahead of welcoming Nigel Clough and his Brewers to the Lane, the Blades boss spoke of his admiration of what the former United manager has achieved at the Pirelli Stadium.
He commented: "Burton enjoyed a fantastic first season in the Championship and it was a brilliant achievement by Nigel, his staff and players to stay up last season.
"This is a club who have come all the way through the divisions and their rise has been absolutely fantastic, they've done unbelievably well, punching well above their weight and if they stay up again it would be as good an achievement as anyone else winning a title or getting promoted."
And Wilder knows this game will take some winning, he added: "We've watched them a lot recently and studied the reports. They were unfortunate not to beat Millwall who are absolutely flying and also Bristol City, who are chasing the play-offs.
"Burton will come here and be really tough to break down, we're going to have to be at our best, move the ball quickly and be patient.
"We've got to make the most of having the ball, be ruthless and clinical because they are in very decent nick by all accounts and they will play with spirit and fight that's for sure."