Leeds United moved five points clear of the Premier League relegation zone following a fiercely contested goalless draw at Crystal Palace.
In a scrappy, sometimes bad-tempered clash Wilfried Zaha came closest to scoring but saw his powerful shot well held by Leeds goalkeeper Illan Meslier.
England midfielder Conor Gallagher also fired a half-volley narrowly over the crossbar from the edge of the area as Leeds secured their second successive clean sheet.
The visitors offered little as an attacking threat with a Liam Cooper header straight at home goalkeeper Vicente Guaita and a shot from substitute Joe Gelhardt their only efforts on target.