Two late goals failed to prevent the Blades slipping to a home defeat against Huddersfield Town.
At Shirecliffe on Monday afternoon, Huddersfield raced into a flattering 3-0 lead before two goals in the last 16 minutes added a measure of respectability to the scoreline.
United's team included Neill Collins and Chris Porter but Huddersfield were the quicker out of the blocks and opened the scoring after 10 minutes. The Blades, though, had a number of first half chances with Coustrain and McDonagh going close before an impressive volley extended Huddersfield's lead on 44 minutes.
The visiting goalkeeper then produced a tremendous save to prevent Whiteman pulling a goal back on the stroke of half-time and soon after the interval Coustrain went close again.
A fortunate ricochet allowed Huddersfield to add a third goal on 69 minutes but coach Chris Morgan will have been happy with the response of his side.
The Blades had a strong penalty appeal turned down before pulling a goal back on 74 minutes. COUSTRAIN's shot from the edge of the box struck a post and spun home, possibly before McDonagh made sure by forcing the ball into the back of the net.
A second Blades goal arrived on 78 minutes, this time after a penalty was given for a foul on Dimaio. WHITEMAN took responsibility for the spot-kick and fired home.
The remaining minutes, plus added time, saw United on the offensive but the only chance of note was a difficult back post header from Collins, which flew just wide.
Blades: Willis, Paling, Scarisbrick (Adebowale 88), Dimaio, Berry, Collins, Coustain, Whiteman, McDonagh, Porter (Banton 57), Hamilton.
Unused: Ramsdale, Fixter, Giraud-Hutchinson.