Their last home defeat came in August...

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So, just the seven changes from Saturday's win over West Brom, then.

But as they've waited 32 years for the chance to reach the final, you can understand why Watford already have one eye on this weekend's FA Cup semi-final against Crystal Palace.

"I am completely confident in the first XI I will pick; I am really curious how we can develop, and the characteristics of the players," said head coach Quique Sanchez Flores.

"We respect West Ham, they are very good, they are one of the best in the Premier League but I trust a lot in my players and I think we can give a very good performance."

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West Ham start with Andy Carroll and Diafra Sakho in attack, with the latter returning after three games out through injury.

Manuel Lanzini also returns to the starting line-up

West Ham: Adrian, Antonio, Reid, Ogbonna, Cresswell, Noble, Kouyate, Lanzini, Payet, Sakho, Carroll.

Subs: Byram, Tomkins, Collins, Obiang, Moses, Emenike  

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Watford make seven changes from the team that beat West Brom, as they look ahead to Sunday's FA Cup semi-final against Crystal Palace.

Troy Deeney drops to the bench, while Odion Ighalo misses out altogether. 

Watford XI: Gomes, Paredes, Prödl, Cathcart, Holebas, Suarez, Behrami, Guedioura, Jurado, Abdi, Amrabat.  

Subs: Pantilimon, Nyom, Britos, Watson, Anya, Berghuis, Deeney.  

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Welcome along to some Wednesday night Premier League goodness.

What's to play for here, then?

Hosts West Ham need to keep up the pressure on Manchester United in the race for fifth place.

Meanwhile, visitors Watford sit snug in mid-table, but have the small matter of an FA Cup semi-final to prepare for.