Preston North End 0-0 Sheffield United
Preston are seven points off the top two after drawing with Sheffield United to end the Blades' 10 game-winning run.
Blades keeper Mark Howard made an early save from Craig Davies while Joe Garner headed wide for Preston.
Paul Gallagher forced a fine low save from Howard moments before a Michael Doyle handball in the box.
Preston's Josh Brownhill hit the post while Garner's front-post volley bounced just wide while North End had another penalty appeal waved away.
The result leaves Preston in fourth in League One, while Sheffield United are 10th and 10 points away from the play-off places.