Nigel Adkins declared Saturday's Emirates FA Cup victory over Oldham Athletic at Bramall Lane as a job well done.
In difficult blustery conditions, Matt Done's early second-half strike proved enough to beat David Dunn's Latics despite the Blades playing the final 23 minutes with ten-men following the dismissal of Che Adams.
But Adkins was keen to focus on the positives after the game and said with the aid of goal line technology his side would have won the game by a greater margin, despite their numerical disadvantage.
He commented: "We are through to the third round, we kept a good clean sheet and George Long was commanding in goal.
"After the red card, we showed good resilience as a team to see the game though, having scored an excellent goal.
"We should have won by two goals really, the ball from John Brayford's thunderbolt of a shot is clearly over the line, but it wasn't given."
Stefan Scougall replaced Billy Sharp at the interval and the Gaffer was more than happy with how his tactical switched worked.
The Blades boss continued: "We needed to change things to make something happen because there was very little in the first-half and thankfully the diamond shape we adopted worked a treat.
"What was really pleasing was the way we managed the game though, our aim was to progress to the next round and we are in the hat for Monday's draw."
One major worry from the game though is the condition of defender Bob Harris, who was taken straight to hospital having being stretchered from the field of play on the stroke of half-time.
Adkins concluded: "Bob will get the best possible care in hospital and we will await his diagnosis before we comment further."