Kieron Freeman played 90 minutes, but United's U23s slipped to a first defeat in five matches on Monday afternoon.
Lewis O'Brien snatched the points for Huddersfield late on at Bramall Lane, as the Terriers came from behind to claim the spoils, after Tyler Smith had given the Blades a first-half lead.
The first opportunity of the game came just after 20 minutes as Booty slipped in O'Brien but Eastwood made himself big and saved to keep the scores level.
United responded in the best possible fashion, going ahead on 25 minutes as a defensive mix-up from the Terriers saw SMITH go through and poke past Coleman to put the Blades in the ascendancy.
Eastwood would be called into action again in the latter stages of the first-half denying Sabiri after a slip from Freeman.
The last noteworthy action of the opening period saw Eastwood make another big save denying O'Brien who beat the offside trap down the right channel.
Shortly after the interval Sabiri tried his luck with a low strike but Eastwood saved smartly down low to his left.
But the visitors levelled 10 minutes later as O'Brien swung in a cross from the right and SABIRI nodded home from seven yards out.
And it Huddersfield who snatched a late winner on 89 minutes as O'BRIEN picked up the ball, cut inside on to his left foot and fired home from 20 yards to give the Terriers all three points.
Blades: Eastwood, Freeman, Norrington-Davies, Sheppeard (Graham 67), Heneghan, Omar (Semple 60), Gilmour, Slater, Smith, Carruthers, Doherty (Mallon 75).
Unused: Dewhurst, Oure.