Image source, Getty Images

Could the Sam Allardyce effect be starting to take hold at Crystal Palace? 

The Eagles have kept clean sheets in both of their recent wins and Big Sam wants to keep their unbeaten run going. 

"For me it's about trying to go undefeated for as long as possible now," Allardyce said this week.

"We're disappointed if we draw matches, but it's still a point. 

"We have to be at our very best, 100% every game between now and the end of the season. We can't let that drop off."

London Calling is ringing around Selhurst Park. The atmosphere is building.

But will Watford continue this run of capital away day victories?

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Mark Lawrenson
BBC football expert

Watford conceded four goals at home to Southampton last time out, when they paid the price for giving Saints far too much time and space to play. I am going to go with another Palace win.

Prediction:  2-0

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Crystal Palace manager Sam Allardyce is forced into one change with Patrick van Aanholt - who scored the winner in the Eagles' last home game - out with an ankle injury. He is replaced by Jeffrey Schlupp .

Crystal Palace XI: Hennessey, Ward, Tomkins, Sakho, Schlupp, Cabaye, Milivojevic, Zaha, Puncheon, Townsend, Christian Benteke. 

Subs: Speroni, Dann, Campbell, Lee, Sako, Delaney, Kelly. 

Watford make two changes with Daryl Janmaat and Craig Cathcart  coming in for Jose Holebas and Stefano Okaka. Nordin Amrabat features for the first time since New Year's Day as one of the substitutes.

Watford XI: Gomes, Cathcart, Kaboul, Prodl, Britos, Janmaat, Capoue, Behrami, Cleverley, Niang, Deeney.

Subs: Amrabat, Success, Doucoure, Zuniga, Holebas, Pantilimon, Okaka.   

Both of these teams have had a two-week break between matches and return to action in differing form. 

Crystal Palace have won their last two games, most recently against West Brom, but Watford are three games without a win - have won just twice in 12 - and conceded four in defeat by Southampton last time out.

Palace could climb to 15th with a win today, just three points behind Watford in 13th on 31 points.

Image source, Rex Features

It is a big day at the bottom of the Premier League.

Sunderland, Hull, Leicester and Swansea are all in action, as well as these two teams at Selhurst Park.

Can Crystal Palace pull away from danger? Will Watford be dragged into the battle to beat the drop or can they all but ensure survival? 

Let's find out.

Image source, Rex Features