West Ham boss David Moyes says there'll be no underestimating Watford.
West Ham face the Hornets after defeat at home to Southampton.
Moyes said, "Christmas is a difficult time of year with the schedule, but we'll get the players ready to go again.
"We're looking to go again. We'll get the players ready – it's a difficult time of year for players, but I hope we can get them all fit, available and ready to play. We're obviously hoping we can improve our performances as well.
"Recovery is huge. Look, even with the best recovery, whatever that may be and everybody will have their own ideas on it, let's be fair – one day in football nowadays isn't enough to do it.
"You have to remember Watford haven't played for 18 days I think so it's not something that lies easily with me, but that's the situation and that's what we're doing. I've played Christmas games all my career so we'll go ahead with it.
"Watford is always a tricky place to go to.
"Claudio Ranieri is an incredibly experienced manager. They had a really good uplift at the start, they've had one or two results which haven't gone quite the way they wanted, but they look as if they're playing in a way to do everything they can to stay out of the bottom three.
"It's never been an easy game at Watford and I don't think this one will be easy either."
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