Vicente Guaita ensured Crystal Palace kept a third consecutive clean sheet as they held Watford to a goalless draw at Vicarage Road.
Ismaila Sarr had the best chance of the first half for Watford, but he failed to direct his volley on target.
Guaita denied Abdoulaye Doucoure and Gerard Deulofeu early in the second half before Deulofeu fired narrowly wide for the hosts when through on goal.
Jordan Ayew blasted over the crossbar for Palace before Gary Cahill made a superb last-ditch tackle to prevent Sarr.
Watford substitute Andre Gray was denied by Guaita late on as neither side were able to make a breakthrough.
Palace drop to eighth place on 22 points.
Watford sit 20th with nine points.
See: Watford report | Crystal Palace report
Next fixtures
Watford: 14 Dec v Liverpool (A)
Crystal Palace: 16 Dec v Brighton (H)
Referee: Martin Atkinson. Assistants: Constantine Hatzidakis, Daniel Cook. Fourth official: Peter Bankes. VAR: Andre Marriner. Assistant VAR: Ian Hussin.
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