Watford boss Slaven Bilic says the Hornets may not be able to afford to drop another single point if they are to catch the Championship's top two.
Watford are 13 points behind second-placed Sheffield United, with leaders Burnley a further five points ahead.
"They are pulling away but there are enough games," Bilic told BBC Three Counties Radio, with 18 matches to go.
"We have to continue to fight, to play and concentrate totally on our game.
"We have to try to win them all if possible because only then are we going to have a chance to catch them or to be in a good position at the end of the season.