United's U23s slipped to a disappointing defeat against Charlton Athletic at the Look Local Stadium on Monday afternoon, conceding three second-half goals at Stocksbridge.
After back-to-back victories on the road over QPR and Newcastle spirits were high, but Academy Manager Travis Binnion admitted the young Blades, who also included George Long, James Wallace and Cameron Stewart were 'well beaten' by the Addicks.
Joseph Cummings scored an unfortunate own-goal before goals from Hanlan and Umerah put the game beyond the Blades.
He remarked: "Over the course of the game we were well between and Charlton were more experienced and better on the day.
"They had the better chances early on but Cummings and Semple made good blocks and we should have done better as Graham headed wide and Kimarni Smith just failed to play a through ball to Hallam.
"Having conceded early in the second-half we struggled to stay in the game and we had George Long to thank for keeping the score respectable.
"We now have work to do on the training pitch before Saturday's Premier League Cup tie against Stoke City at the Bet365 Stadium."
Blades: Long, Cummings, A. Brown (Charlesworth 69), J. Wallace, Graham, Semple, Stewart, Gilmour, K. Smith (Slater 74), Hallam (Mallon 64), T. Smith.
Unused: Perryman, Burton.