United's U18s made it two home victories on the bounce, with a deserved win over Bristol City at Shirecliffe on Saturday.
A fantastic individual effort from Dominic Calvert-Lewin won the game for the home side in the final ten minutes, after United had been pegged back after half-time, following Jake Wright's first-half opener.
The Blades were also indebted to goalkeeper Jake Eastwood who saved a penalty shortly after Wright's goal, against a Bristol City who kept possession very well throughout the game.
The Robins started the game well, keeping the ball and frustrating United, but the home side had the first effort on goal in the 10th minute when Wright and Calvert-Lewin combined before the latter saw his shot tipped around the post.
From the subsequent corner a goalmouth scramble ensued and despite the best efforts of a host of United players, City somehow escaped unscathed and cleared the ball.
In the 36th minute United took the lead, Heh broke down the right and from his cross WRIGHT got across the front of his marker to loop a header over the onrushing goalkeeper and into the unguarded net.
Shortly afterwards, the visitors should have equalised from the penalty spot after an unnecessary challenge from Cheeseman, but Eastwood made an excellent save low to his right to ensure United went into the break in front.
The second-half saw United dominate for long periods, Wright forced a smart save at the goalkeeper's near post, before Calvert-Lewin rattled the crossbar with a thunderous long-range effort, only for City to restore parity with 15 minutes remaining.
United failed to clear their lines on numerous occasions before a clever threaded ball put a midfield runner in behind the home defence and from inside the box Eastwood had no chance.
The Blades refused to settle for a point though and CALVERT-LEWIN won the game with a terrific chip in the 81st minute after a marauding run forward from the halfway line.
Cheeseman was the denied a game clinching third in the Blades next attack, but United held on for a deserved win, much to the delight of Coach Travis Binnion, who is now looking forward to the FA Youth Cup clash with Hartlepool United at Bramall Lane.
He remarked: "It was a hard fought but deserved win against a decent Bristol City outfit, who certainly gave us a good test.
"We need to improve defensively and although we had to sacrifice a bit of flair to be more solid as a team, we are certainly improving with each game with play.
"Now we have a full week where we can get on the training ground and work hard ahead of the FA Youth Cup clash on Monday."
Blades: Eastwood, Brown, Kedman (Hutchinson 77), Ishmail, Evans, Cheeseman, Ramsey (Slew 58), Gordon, Calvert-Lewin, Wright, Heh (Fixter 84).
Unused: Ramsdale, Adebowale.