Chris Wilder acknowledged his side were below par in Saturday's loss against Nottingham Forest.
But the Blades boss was still frustrated and annoyed to leave the City Ground empty-handed, after Lewis Grabban settled the contest in the hosts favour in the second-half.
The Blades boss remarked: "We didn't play well and we didn't take anything from the game, it's something we must address.
"I've said to the players when we play well we expect to win. There will be times when you deservedly win games, time when you are out played, and you hold your hands up.
"But between that there will be tight games when you aren't as good as you'd like to be but you have to come away with something."
Wilder added: "It's happened two or three times already this season when we've not come away with anything from tight games.
"I thought our quality was way down on where we want to be, we didn't control the game as we'd like from the first minute until the 93rd minute, our goalkeeper hasn't had much to do, but neither has theirs.
"The game was a low quality affair given the quality of players on show, but Forest have got a result and we haven't, that's disappointing."