The Blades dominated in all areas on the way to completing a Championship double over Bristol City.

Second half goals from strikers Henri Camara and Darius Henderson - his fourth over the Robins this season - ensured United ended a run of four games without a win.

There were a number of impressive performers as United kept the pressure on the division's top six.

Bunn returned in goal as one of four changes made to the starting line up by Blackwell. The attacking trio of Ward, Camara and Henderson were also recalled. Bennett, Quinn, Evans and Cresswell missed out but all took up places on the bench. Teenager Bartley made his home debut, whilst for the visitors Iwelumo started after signing on loan from Wolves.

Within United's 4-4-2 system, Henderson and Camara were the new front two with Ward and Yeates adding pace and trickery from the flanks. The back four remained unchanged.

As in the previous week's home encounter, the opening minutes saw Bunn attempting to recover from a collision with an opposition striker. This time it was Agyemang and the goalkeeper who went for the same ball but on this occasion Bunn did not need treatment.

City's front two of Iwelumo and Agyemang both had weak headers in the opening five minutes and, for United, Ward's delivery from the left was straight across the face of goal and Williamson's delicate chip drifted into the arms of Gerken.

From as early as 15 minutes it was clear that Ward and Yeates would be switching wings in order to drag the City defenders out of position, the duo combined on 17 minutes but Camara could not find the target.

Twice, in the space of a couple of minutes, Henderson had the chance to open the scoring but he was unable to test Gerken with headers. The first, from Geary's cross, was wide despite the big man being unmarked and then he headed over, under pressure from Orr, follow a deep Ward cross.

Sproule's long range effort was straight at Bunn and Geary was the first to be booked, for a foul on Nyatanga, but United had started brightly and Ward, Yeates and Williamson were involved in some neat stuff approaching the City penalty area.

Bartley made an impression at both ends of the pitch, firstly preventing Iwelumo getting a shot in from Orr's cross and then marauding forward to find himself on the end of a half-clearance, but his shot deflected off Fontaine before falling nicely for the visiting goalkeeper.

Gerken was called upon twice to save from Yeates, a former team-mate at Colchester, as half-time approached. The first was from a powerful volley from 25-yards and then the stopper gathered a cross under his bar.

With Montgomery and Williamson dominating the midfield battle and Ward and Yeates looking a threat from the wide areas, United could feel themselves unlucky not to have the lead when the referee's half-time whistle blew.

Within 70 seconds of the restart Camara poked an effort at Gerken, which proved to be a taster of things to come. On 49 minutes Bartley's ball down the right channel saw CAMARA produce a fabulous first touch before firing into the top corner of the net, giving the goalkeeper no chance. The striker then led the lengthy celebrations in front of the Kop.

Hartley and Nyatanga were both booked for the visitors and City's attempts to get back into the game - Orr shooting well over and Bunn collecting a Sproule cross in front of Agyemang - were jaded.

Back at the other end, United added a deserved second just past the hour mark. Ward, on the left, delivered an inswinging cross and HENDERSON nipped in ahead of Carey and added the necessary flick to beat Gerken.

To compound City's day, Carey's header from Hartley's corner struck the top of the crossbar and then Gerken and Fontaine were involved in a sickening collision. Fortunately, both players were fit to continue.

Not content with sitting on the lead, the Blades continued to attack and Gerken denied Camara on two occasions in the same move.

Quinn replaced the tiring Camara and Cresswell came on for Henderson but Blackwell maintained the 4-4-2 formation right to the end - which included five stoppage time minutes.

The added minutes were relatively incidentless, apart from Quinn shooting just wide from a Ward cross but the final whistle confirmed three welcome points and an impressive performance.

Blades: Bunn, Montgomery, Nosworthy, Henderson (Cresswell 89), Yeates, Williamson, Ward, Bartley, Geary, Kallio, Camara (Quinn 81).
Unused: Evans, Bennett, Stewart, Little, Fortune.

Bristol City: Gerken, Orr, Fontaine, Carey, Hartley, Skuse (Clarkson 90), Williams (Elliott 67), Sproule, Nyatanga, Agyemang (Haynes 67), Iwelumo.
Unused: Johnson, Collis, Wilson, Edwards.