Diego De Girolamo netted a brace on his return to competitive action, as United's U18s started 2014 with a deserved win.
The striker scored twice in the opening 25 minutes to pave the way for the victory. Otis Khan added a double in the second-half to ensure a comfortbale success at the Redtooth Academy at Shirecliffe.
United started brightly and could have gone in front with the first attack, but Cheeseman headed over Whiteman's inviting corner, at the other end, Owen had to be alert to deny the visitors a goalscoring opportunity.
Partnering Jake Eyre, DE GIROLAMO opened the scored in the 12th minute. Khan played an excellent reverse pass and the marksman slid the ball under the advancing goalkeeper.
Coventry were a threat on the counter-attack, but DE GIROLAMO doubled the advantage with a fine solo effort. From a Scarisbrick long throw, the striker rolled his marker, feinted to shoot, before firing the ball home from inside the penalty area.
In the 36th minute, the Sky Blues were handed a lifeline from the penalty spot which they duly accepted, but United should have gone in at the break 3-1 up, but Calvert-Lewin couldn't apply the finishing touch after a mauruading run through the visitors defence.
After an open first-half, United controlled the game much better after the interval with Whiteman and Dimaio providing a solid platform for the Blades to attack from, whilst Coustrain replaced De Girolamo for the beginning of the second-half.
KHAN got his first and the Blades' third with an excellent long-range free-kick in the 55th minute, ten minutes later he got his second to add a bit of gloss to the scoreline, capitilising on defensive mistake.
Eyre, Cockerline and Coustrain could have all got on the scoresheet in the final minutes, but coach Travis Binnion was happy to see United kick-off 2014 in style.
He remarked: "We weren't quite at it in the first-half, it was slightly below-par for us and we spoke about that at half-time.
"In the second-half we were excellent, producing a really mature performance. Diego scored two goals and looked sharp which is pleasing for everyone, but a special mention must go to Otis for his brace and assist.
"It was just dissapointing that Jake (Eyre) didn't get the goal his workrate deserved. He was a real spearhead going forward."
Blades: Owen, Scarisbrick, Ptak, Dimaio, Cheeseman, Evans, Whiteman, Calvert-Lewin (Cockerline, 55), Eyre (Ishmail, 70) De Girolamo (Coustrain 45), Khan.
Unused: Eastwood, Reed.
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