Mark Duffy echoed the sentiments of boss Chris Wilder, by expressing his frustrations following Saturday's reversal at Birmingham City.
Duffy, who netted the opener on his return to St Andrew's after just seven minutes, felt the Blades were guilty of poor game management.
He remarked: "In the biggest game of the season we didn't really turn up and that's bitterly disappointing.
"Having gone in front we should have controlled the game and grown into it. We conceded sloppy goals and it's happened too often of late.
"We lacked that quality in the final third, we made the game into a fight and the Gaffer said to us that he thought they had more fight than us and that hurts."
Duffy continued: "There are no excuses, the Gaffer has had a go at us and rightly so. We were flat and its up there with the most disappointing performances of the season, but we must lick our wounds and try and win the last two matches.
"Mathematically it hasn't gone so we must try and beat Preston and Bristol City and see where that takes us."