United's Under 18s fell to a frustrating 4-1 defeat against Bolton Wanderers despite creating more than enough chances to get a result from the game.
An Eddie Brown hat-trick was the catalyst for Bolton's victory whilst United were reduced to a Sam Ackroyd penalty after missing several chances to get back in the match.
Tom Weaver should have headed United in front from George Broadbent's free-kick after ten minutes and Bolton soon went down the other end and punished the Blades, something that soon became the story of the game.
Neat play from the Bolton attack saw Brown played in and his low finish was enough to beat Dewhurst into the corner.
Three minutes later and it was 2-0, Brown again the man on target. This time going on his own, Brown cut in from the left and once again fired another low effort into the corner of the net.
United responded and could have scored three or four in the final ten minutes of the half, Ackroyd scoring a penalty after Weaver's header back across goal was handled by a Bolton defender.
Three chances then went begging before the break with the lively Harry Boyes involved in all of them down the left.
Boyes himself fired a low effort into the side netting before his whipped in cross was headed wide at the back post by Tom Williams.
Boyes then set up Zak Brunt who curled an effort past the far post and Ackroyd headed wide Broadbent's free-kick at the end of the half.
The second half was less eventful and more frustrating, substitute Laurence Smith firing home from close range with 20 minutes to go to reinstate Bolton's two-goal advantage.
Despite plenty of pressure, Brown wrapped up his hat-trick with five minutes to go as United pressed forward looking for a route back into the match.
Blades: Dewhurst, Williams (Belehouan 71), Boyes, Neal, Weaver, Gordon, J. Kelly (Gaxha 46), Broadbent, Ackroyd, Brunt, Ompreon (Clarke 68).
Unused: S. Kelly, Foulstone.