Blades boss Nigel Adkins thought his side did more than enough to secure all three points against Fleetwood Town on Saturday.
In the end a penalty from Che Adams in injury-time earnt United a share of the spoils at Highbury Stadium, after Matt Done's opener had been cancelled out by strikes from Ash Hunter and Marcus Nilsson, either side of half-time.
But Adkins was pleased his troops and felt their endeavours deserved more.
He remarked: "We dominated and controlled the game for long periods and it was a good response following Tuesday night.
"We created numerous chances and had a blatant penalty denied in the first-half, when it was as clear as day.
"In the second-half we kept the spirit going right to the end and having equalised John Brayford scores a perfectly good goal, which is disallowed for a foul.
"But on the flip side, the goals we conceded were shocking. We simply have to defend routine balls into the box and our centre-halves didn't."
The Gaffer added: "We leave annoyed because we have come and being positive and deserved to win the game, but unfortunately we only have a point to show for our performance, which was very good at times.
"Che (Adams) and Dom (Calvert-Lewin) combined together and will improve with games, whilst Alex (Baptiste) did really well, he has got genuine pace and is a really talented player that offers us flexibility which we need in a bid to go out and win a run of matches."