Alfie Potter scored a second-half leveller for Oxford at fellow play-off hopefuls Burton.
Adam Bolder gave the Brewers an early lead after a smart corner routine found him in space, his low shot just beating U's keeper Ryan Clarke.
Potter forced a fine stop from home custodian Ross Atkins before firing in an excellent strike after breaking through the home defence.
James Constable almost won it for the visitors but he shot just wide.
VIEWS FROM THE DRESSING ROOM
Burton Albion manager Paul Peschisolido:
"We had so much possession and the style of football we played in the first half was absolutely magnificent.
"We got on the ball, we passed it and our movement was magnificent. We just attacked and attacked and attacked.
"If we had got the second goal then that game would have probably been finished.
"If it's only 1-0 in the second half then there is always that opportunity for a moment of brilliance and an equaliser and that is what happened."
Oxford forward Alfie Potter told BBC Radio Oxford:
"It was not the best first half from us, but the gaffer made some changes and it worked and in the end I think we were unlucky not to win it.
"The goal was long overdue, I've been missing a lot of chances, but in the end I could have had a couple. I'm glad to get one and hopefully it's the first of many. It was all instinct, I just put my foot through it.
"It was just one of those games, first half we couldn't get to grips with them but second half we were excellent."
Live Text Commentary
Full Time The game is over, as the referee blows his whistle.90:00 +2:36
Free kick awarded for an unfair challenge on Jon-Paul Pittman by John McGrath. Simon Heslop restarts play with the free kick.90:00 +0:51
Unfair challenge on Michael Duberry by Adi Yussuf results in a free kick. Michael Duberry restarts play with the free kick.89:41
Adi Yussuf produces a left-footed shot from deep inside the area which goes wide of the left-hand post.88:14
The free kick is swung in right-footed by Callum Driver, clearance made by Michael Duberry.88:14 Booking
Booking Oli Johnson is booked.87:58
Unfair challenge on Callum Driver by Oli Johnson results in a free kick.85:50
Free kick awarded for a foul by Ryan Austin on Jon-Paul Pittman. Peter Leven fires a strike on goal direct from the free kick.84:54
Adi Yussuf challenges Michael Duberry unfairly and gives away a free kick. Free kick taken by Ryan Clarke.84:30
Alfie Potter takes a shot. Ross Atkins makes a save.83:32
Free kick awarded for an unfair challenge on Adam Bolder by Peter Leven. Callum Driver takes the free kick.82:35
Peter Leven gives away a free kick for an unfair challenge on John McGrath. John McGrath takes the direct free kick.81:45
Free kick crossed left-footed by Peter Leven, Ross Atkins makes a save.81:45 Booking
Booking Ryan Austin receives a yellow card for unsporting behaviour.81:21
Ryan Austin challenges Jon-Paul Pittman unfairly and gives away a free kick.79:50
Oli Johnson concedes a free kick for a foul on Andrew Corbett. Direct free kick taken by Ryan Austin.78:36
John McGrath fouled by Oli Johnson, the ref awards a free kick. Free kick taken by Nathan Stanton.77:35
Long range shot by Jacques Maghoma goes wide right of the goal.76:33
Corner taken by Chris Palmer from the right by-line played to the near post, clearance by Jake Wright.76:25
The ball is sent over by Jacques Maghoma, Liam Davis gets a block in.
James Constable crosses the ball, Peter Leven takes a shot. Save made by Ross Atkins.74:15
Adi Yussuf takes a shot. Ryan Clarke makes a comfortable save.73:21 Substitution
Substitution Adi Yussuf on for Calvin Zola.72:00
Jacques Maghoma concedes a free kick for a foul on Michael Duberry. Ryan Clarke restarts play with the free kick.68:51
The ball is crossed by Callum Driver, clearance by Jake Wright. A cross is delivered by Callum Driver, Andrew Corbett takes a shot. Save made by Ryan Clarke.68:29 Substitution
Substitution Chris Palmer replaces Andres Gurrieri.67:06
Direct free kick taken by Nathan Stanton.67:06 Booking
Booking Liam Davis shown a yellow card.66:49
Free kick awarded for an unfair challenge on Jacques Maghoma by Liam Davis.65:45
Free kick awarded for a foul by Oli Johnson on Ryan Austin. Direct free kick taken by Ryan Austin.64:19
Effort from inside the area by James Constable misses to the right of the goal.64:01
Foul by Jacques Maghoma on Peter Leven, free kick awarded. Peter Leven takes the free kick.63:28
Oli Johnson takes a shot. Save by Ross Atkins.61:24
Unfair challenge on Andrew Whing by Andrew Corbett results in a free kick. Simon Heslop delivers the ball from the free kick right-footed from right wing. Close range shot by Alfie Potter clears the bar.60:40
Shot on goal by Callum Driver from long range goes harmlessly over the target.58:04 Goal scored
Goal! - Alfie Potter - Burton 1 - 1 Oxford Alfie Potter scores a goal from close in to the bottom left corner of the goal. Burton Albion 1-1 Oxford Utd.54:52
Free kick awarded for a foul by Alfie Potter on John McGrath. John McGrath takes the direct free kick.54:30
Corner taken by Peter Leven from the left by-line.54:09
Alfie Potter takes a shot. Save by Ross Atkins.53:45
A cross is delivered by Andrew Corbett, save by Ryan Clarke.53:18
Michael Duberry challenges Calvin Zola unfairly and gives away a free kick. Ryan Austin takes the free kick.52:45
Shot from just outside the box by Liam Davis goes over the bar.52:06
Free kick awarded for an unfair challenge on Jon-Paul Pittman by Ryan Austin. Simon Heslop restarts play with the free kick.51:31
Free kick awarded for a foul by James Constable on Nathan Stanton. Free kick taken by Callum Driver.50:35
Andres Gurrieri takes a inswinging corner from the left by-line played to the near post, Header by Calvin Zola from deep inside the penalty area misses to the left of the goal.49:00
Jacques Maghoma has an effort at goal from outside the penalty box missing to the wide left of the goal.47:47
The referee penalises Oli Johnson for handball. Callum Driver takes the direct free kick.45:01
The second half has started.45:01 Substitution
Substitution Asa Hall goes off and Oli Johnson comes on.45:00 +3:08 Half time
Half Time The whistle is blown to end the first half.44:47
Asa Hall concedes a free kick for a foul on Adam Bolder. Direct free kick taken by Lee Lucas.43:47
Asa Hall gives away a free kick for an unfair challenge on John McGrath. John McGrath restarts play with the free kick.43:17 Booking
Booking James Constable goes into the book.42:20
Jon-Paul Pittman takes a shot. Blocked by Ryan Austin.37:15
Shot from outside the penalty box by Simon Heslop goes wide right of the goal.36:53
Peter Leven takes a inswinging corner.35:45
Free kick awarded for an unfair challenge on Peter Leven by Adam Bolder. Direct free kick taken by Peter Leven.33:32
John McGrath takes a shot. Ryan Clarke makes a comfortable save.32:52 Substitution
Substitution Andrew Corbett comes on in place of Aaron Webster.30:36
Handball decision goes against Lee Lucas. Ryan Clarke takes the indirect free kick.26:43
Liam Davis fouled by Jacques Maghoma, the ref awards a free kick. Ryan Clarke takes the free kick.24:58
The referee blows for offside against Asa Hall. Free kick taken by Nathan Stanton.23:16
Calvin Zola takes a shot. Liam Davis gets a block in.21:36
Adam Bolder concedes a free kick for a foul on Liam Davis. Ryan Clarke restarts play with the free kick.16:21
Nathan Stanton concedes a free kick for a foul on James Constable. Peter Leven takes the direct free kick.14:56
Adam Bolder gives away a free kick for an unfair challenge on Alfie Potter. Direct free kick taken by Jake Wright.14:15
James Constable challenges Nathan Stanton unfairly and gives away a free kick. Direct free kick taken by Nathan Stanton.12:51
Andres Gurrieri provided the assist for the goal.12:51 Goal scored
Goal! - Adam Bolder - Burton 1 - 0 Oxford Adam Bolder scores a goal from inside the box to the bottom left corner of the goal. Burton Albion 1-0 Oxford Utd.12:37
Andres Gurrieri decides to take the corner short.12:31
A cross is delivered by Andres Gurrieri, blocked by Andrew Whing.12:09
Inswinging corner taken from the left by-line by Andres Gurrieri, clearance made by Andrew Whing.11:55
Callum Driver crosses the ball, John McGrath takes a shot. Save made by Ryan Clarke.11:31
Free kick awarded for a foul by Andrew Whing on Andres Gurrieri. Aaron Webster takes the free kick.9:43
Unfair challenge on Andres Gurrieri by Michael Duberry results in a free kick. John McGrath restarts play with the free kick.8:13
Corner taken left-footed by John McGrath, Ryan Clarke makes a save. Unfair challenge on Ryan Clarke by Calvin Zola results in a free kick. Free kick taken by Ryan Clarke.5:52
The ball is crossed by James Constable, Peter Leven has a headed effort at goal from deep inside the area missing to the right of the target.1:21
James Constable is adjudged to have handled the ball. Nathan Stanton takes the direct free kick.0:35
Ryan Austin fouled by James Constable, the ref awards a free kick. Ross Atkins restarts play with the free kick.0:00
The referee gets the match started.
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