Nick Blackman hit a stunning second-half winner against Leyton Orient at Brisbane Road to maintain Sheffield United's unbeaten start to the season.
Neither keeper was really extended in a lacklustre first-half.
But Blades striker Blackman collected a pass on 59 minutes, before curling a 25-yard left-foot shot past home keeper Ryan Allsop's outstretched arm.
The visitors then dictated, but needed a brilliant save by George Long to deny Kevin Lisbie's header.
Teenage keeper Long had come on in the 11th minute for Blades number one Mark Howard, who slipped taking a goal-kick and had to be stretchered off.
The Blades stay third in League One as a result of their third straight away win - and their second in four days, following Tuesday night's 2-1 win at Hartlepool.
VIEWS FROM THE DRESSING ROOM
Leyton Orient manager Russell Slade told BBC London 94.9:
"They were the best side we've played this season. You've only got to look at their record to know they're a difficult side to beat.
"It was always going to be a tight affair and that's what it turned out to be.
"We lost to a good side and arguably we deserved to lose the game."
Sheffield United manager Danny Wilson told BBC Radio Sheffield:
"I thought we were totally in control.
"I think for large parts of the game we dominated the play.
"I wasn't too happy with the situations that developed and that final ball, but overall the performance was very strong and we didn't have many problems if I'm quite honest."
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Live Text Commentary
Full Time The match has reached full-time.90:00 +5:16
Ben Chorley has a shot on goal from outside the area which misses right.90:00 +5:08
The ball is swung over by Nathan Clarke, Ryan Flynn makes a clearance.90:00 +3:26
Richard Cresswell takes a shot. Comfortable save by Ryan Allsop.90:00 +2:11
Michael Symes is ruled offside. Direct free kick taken by George Long.90:00 +1:48
Anthony Griffith takes a shot. Blocked by Kevin McDonald.90:00 +0:52
Chris Porter concedes a free kick for a foul on Gary Sawyer. Free kick taken by Ben Chorley.88:06
Direct free kick taken by Harry Maguire.88:06 Booking
Booking The referee shows Lee Cook a yellow card for unsporting behaviour.87:59
Foul by Lee Cook on Ryan Flynn, free kick awarded.87:15
Kevin McDonald fouled by Anthony Griffith, the ref awards a free kick. Direct free kick taken by Harry Maguire.86:24
Ryan Brunt fouled by Tony McMahon, the ref awards a free kick. Direct free kick taken by Lloyd James.85:54
The ball is crossed by Lee Cook, save by George Long.85:39
Free kick awarded for a foul by Tony McMahon on Lee Cook. Direct free kick taken by Gary Sawyer.82:34
George Long takes the direct free kick.82:34 Substitution
Substitution Dave Kitson goes off and Chris Porter comes on.82:34 Substitution
Substitution Richard Cresswell comes on in place of Nick Blackman.82:34
Foul by Dean Cox on Matthew Hill, free kick awarded.80:57 Substitution
Substitution Martin Rowlands goes off and Lloyd James comes on.79:51
Michael Symes fouled by Tony McMahon, the ref awards a free kick. Lee Cook takes the free kick.
Substitution Ryan Brunt is brought on as a substitute for Kevin Lisbie.75:13
Free kick crossed right-footed by Paul Gallagher from left wing, save by Ryan Allsop.75:13 Booking
Booking The referee shows Ben Chorley a yellow card.75:09
Ben Chorley concedes a free kick for a foul on Nick Blackman.73:41
Direct effort from the free kick comes in from Lee Cook.73:41 Booking
Booking Marcus Williams goes into the book for unsporting behaviour.73:18
Michael Symes takes a shot. Harry Maguire gets a block in. Free kick awarded for a foul by Marcus Williams on Anthony Griffith.71:03
Free kick awarded for a foul by Nathan Clarke on Dave Kitson. Paul Gallagher crosses the ball in from the free kick, Michael Symes manages to make a clearance.69:41
Lee Cook produces a cross, Kevin Lisbie takes a shot. Save made by George Long.69:32
A cross is delivered by Dean Cox, clearance by Harry Maguire.67:01
Michael Doyle takes a shot. Save by Ryan Allsop.66:16
Free kick taken by Harry Maguire.66:16 Booking
Booking The referee shows Gary Sawyer a yellow card for unsporting behaviour.66:02
Free kick awarded for a foul by Gary Sawyer on Kevin McDonald.65:17
Nathan Clarke gives away a free kick for an unfair challenge on Dave Kitson. Paul Gallagher takes the free kick.64:38
Anthony Griffith has an effort at goal from the edge of the box that misses to the right of the target.63:21
Foul by Dave Kitson on Martin Rowlands, free kick awarded. Ben Chorley restarts play with the free kick.62:58
Lee Cook delivers the ball, Harry Maguire makes a clearance.62:37
Tony McMahon gives away a free kick for an unfair challenge on Gary Sawyer. Free kick taken by Dean Cox.61:47
Foul by Nathan Clarke on Dave Kitson, free kick awarded. Free kick taken by Paul Gallagher.58:33
Assist by Dave Kitson.58:33 Goal scored
Goal! - Nick Blackman - Leyton O 0 - 1 Sheff Utd Nick Blackman finds the back of the net with a goal from just outside the box to the top left corner of the goal. Leyton Orient 0-1 Sheff Utd.57:34
The ball is sent over by Ryan Flynn, clearance made by Gary Sawyer.56:53
The referee blows for offside. George Long takes the free kick.56:46
The ball is crossed by Lee Cook, clearance by Matthew Hill.55:48
Nick Blackman is penalised for handball and concedes a free kick. Ryan Allsop takes the direct free kick.54:48
Unfair challenge on Ryan Flynn by Michael Symes results in a free kick. Free kick taken by Matthew Hill.54:13
Paul Gallagher produces a cross.52:24
The referee gives a free kick against Nick Blackman for handball. Ryan Allsop takes the direct free kick.50:41
Paul Gallagher crosses the ball.47:11
Short corner taken by Paul Gallagher from the right by-line, The ball is crossed by Tony McMahon, save made by Ryan Allsop.46:07
Centre by Ryan Flynn, clearance by Ben Chorley.45:01
The referee gets the second half underway.45:01 Substitution
Substitution Michael Symes comes on in place of Jimmy Smith.45:00 +3:23 Half time
Half Time The ref blows to end the first period.45:00 +1:30
Unfair challenge on Nick Blackman by Ben Chorley results in a free kick. Direct free kick taken by Paul Gallagher.45:00 +1:04
Martin Rowlands crosses the ball, clearance by Harry Maguire.45:00 +0:33
Dave Kitson challenges Leon McSweeney unfairly and gives away a free kick. Martin Rowlands takes the free kick.44:44
Shot from long range by Paul Gallagher goes wide of the left-hand post.43:51
Unfair challenge on Tony McMahon by Lee Cook results in a free kick. The free kick is swung in right-footed by Paul Gallagher, clearance made by Martin Rowlands.43:00
Kevin Lisbie challenges Marcus Williams unfairly and gives away a free kick. Matthew Hill takes the direct free kick.42:27
Dave Kitson produces a left-footed shot from just outside the box that goes wide right of the goal.42:07
The ball is swung over by Nathan Clarke, clearance by Harry Maguire.41:04
Foul by Harry Maguire on Martin Rowlands, free kick awarded. Ben Chorley restarts play with the free kick.38:25
The referee blows for offside. Ryan Allsop takes the free kick.37:20
Corner taken right-footed by Dean Cox from the left by-line, Ben Chorley takes a shot. Dave Kitson makes a clearance.36:46
Corner taken by Lee Cook, Dave Kitson manages to make a clearance.32:27
Dean Cox delivers the ball, save by Tony McMahon.31:12
Gary Sawyer gives away a free kick for an unfair challenge on Ryan Flynn. Free kick crossed right-footed by Tony McMahon, clearance made by Kevin Lisbie. Unfair challenge on Anthony Griffith by Harry Maguire results in a free kick. Free kick taken by Ryan Allsop.27:50
Dave Kitson concedes a free kick for a foul on Leon McSweeney. Ryan Allsop takes the free kick.26:36
Anthony Griffith sends in a cross.25:54
Tony McMahon takes a shot. Ryan Allsop makes a save.23:00
Paul Gallagher takes a shot. Martin Rowlands gets a block in. Paul Gallagher takes the inswinging corner, Nathan Clarke fouled by Dave Kitson, the ref awards a free kick. Ryan Allsop takes the direct free kick.17:28
Free kick awarded for an unfair challenge on Kevin Lisbie by Marcus Williams. The free kick is swung in left-footed by Lee Cook, clearance made by Matthew Hill.15:32
Tony McMahon produces a cross, Nick Blackman produces a right-footed shot from deep inside the penalty box which goes wide of the right-hand upright.14:25
Tony McMahon crosses the ball.13:30
Corner taken by Lee Cook from the right by-line, clearance by Dave Kitson.10:24 Substitution
Substitution George Long is brought on as a substitute for Mark Howard.6:52
Effort from outside the penalty area by Tony McMahon goes wide left of the target.5:59
Free kick awarded for an unfair challenge on Nick Blackman by Gary Sawyer. The free kick is delivered right-footed by Tony McMahon from right wing, clearance made by Kevin Lisbie.3:19
Marcus Williams fouled by Anthony Griffith, the ref awards a free kick. Free kick taken by Mark Howard.0:35
Free kick awarded for an unfair challenge on Marcus Williams by Kevin Lisbie. Mark Howard takes the free kick.0:00
The match begins.
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