LEEDS 1 (Byram 56), PETERBOROUGH 1 (Gayle 15)
Leeds: Kenny, Byram, Peltier, Lees (Pearce 26), Warnock, Green, Tonge, Norris (Austin 80), Varney, Morison, McCormack. Subs: Ashdown, White, Brown, Austin, Diouf, Habibou.
Peterborough: Olejnik, Little, Rowe, Bostwick, Knight-Percival, Zakuani, Payne, Ferdinand (Barnett 78), Swanson, Tomlin, Gayle. Subs: Day, Brisley, Alcock, McCann, Nthle, Mendez-Laing
Referee: S Hooper
Att: 24,240 (331 Peterborough)
United manager Neil Warnock named an unchanged team for the sixth game in succession, the first time Leeds had named the same starting XI for so many games in succession since the start of the 1992/93 season.
Leeds were five unbeaten going into the game, and it was Michael Tonge who had the first sight of goal when he had a shot from distance saved by Robert Olejnik.
But United were 1-0 down after 15 minutes when Dwight Gayle latched on to a long ball forward from the goalkeeper before delivering a good finish past Paddy Kenny.
United had to re-arrange shortly after the goal when, after receiving treatment on an injury, Tom Lees was replaced by Jason Pearce.
It took Leeds almost half-an-hour to get a foothold in the game and the first real spell of pressure put the visitors on the back foot, Ross McCormack having a shot blocked.
Peterborough responded by moving the ball well on the break again and the ball was cleared from Kane Ferdinand with Kenny stranded.
Moments later it was United who should have scored, Jason Pearce heading over the bar from close range after great work by McCormack. Steve Morison also dragged a shot wide of the upright moments before the half-time whistle.
Warnock made his second substitution at half-time, El-Hadji Diouf replacing Morison, a player who the manager had said played through the pain barrier at Leicester and Crystal Palace.
But it was Peterborough who had the first opportunity of the second half when Gayle again found space to lead a quick break, and his shot was just wide of the upright.
United were back on level terms of 56 minutes, though, when Sam Byram arrived late at the back post to apply the finishing touch to an inswinging corner.
The goal was deserved but, while it was United who were dominating in terms of possession, Peterborough were an ever present threat on the break. The visitors moved the ball quickly to break at every opportunity and as the game headed into the final 20 minutes it was finely balanced.
Both Michael Tonge and McCormack had shots blocked and there was more than one shout in vain for a penalty as the ball pinged around the Peterborough box.
With 14 minutes remaining, Luke Varney did find a way through when he finished off a good move by stroking the ball past Olejnik, only to see his effort ruled out by an offside flag.
At the other end, it was Kenny who came to United's rescue with eight minutes remaining when he made a terrific save from Gayle after the Peterborough man looked to capitalise on a defensive error.
It was United who piled on the pressure, though, as the clock ticked down, but the visitors got men behind the ball and made some vital blocks.