They welcome a Liverpool side keen to capitalise on slip-ups from top-four rivals in recent days. The Reds can pull four points clear of fifth-place Manchester United with victory at Watford.
Watford XI: Gomes; Mariappa, Prodl, Britos; Janmaat, Cleverley, Doucoure, Capoue, Amrabat; Deeney, Niang
Liverpool XI: Mignolet; Clyne, Matip, Lovren, Milner; Can, Lucas, Wijnaldum; Firmino, Origi, Coutinho
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WHAT THEY'RE SAYING
Watford boss Walter Mazzarri said: "I am not looking at other people's problems with the table. I am only interested in my team.
"I want them to fight for every ball and to concentrate lots."
Liverpool boss Jurgen Klopp said: "It is easy mathematics to know what points the other teams can get, but they play against each other and all that stuff. No team, of the teams we fight for top four, can win all the games.
"They play in a few moments against each other. Why should we think about it too much? I do not feel fear, not one second so far."