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- Schlupp replaces injured Van Aanholt for Palace
- Watford bring in Cathcart and Janmaat for Holebas and Okaka
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That was the chance!
M'Baye Niang lifts the ball over after Hennessey spilled the ball.
There doesn't look to be an equaliser coming.
Palace are holding on.
Excellent defending from Palace to snuff out Isaac Success.
There will be four minutes added.
Now Yohan Cabaye shoots wide!
Crystal Palace really are on top now with the pressure released at Selhurst Park after Troy Deeney's own goal.
The French midfielder has the chance to put the game to bed but his volley goes narrowly wide of the left-hand post.
That's Cabaye's last involvement as he is replaced by Bakary Sako.
What a chance to seal it!
Zaha again runs at the Watford defence, plays the ball through to Christian Benteke but the big Belgian's touch, when through on goal, is awful and gives Younes Kaboul chance to clear.
Scott Dann is on for James Tomkins for Palace who looks to have picked up an injury.
Tom Cleverley has been living dangerously on a yellow card in the second half and he has been replaced. On comes forward Isaac Success.
Christian Benteke comes to life for the first time in the match, driving to the edge of the area from deep, but shoots wide.
Abdoulaye Doucoure's 35-yard strike is swerving horribly in front of Wayne Hennessey but the Welshman does well to parry wide.
He did well after initially being surprised by the shot.
It is all getting a little heated after that goal.
Tom Cleverley, who is on a yellow card, gets a talking to from Martin Atkinson.
Watford are trying to push forward but there is no support for Troy Deeney.
And from that free-kick Yohan Cabaye's delivery is headed into his own net by Troy Deeney !
He was stretching trying to clear the ball but could only glance the ball in off the post beyond Heurelho Gomes.
- Copyright: Reuters
More tackles flying in.
M'Baye Niang is down after a lunging tackle from Crystal Palace's Luka Miliojevic but the referee sees no issue with it.
At the other end, Prodl goes into the book for a foul on Zaha.Copyright: Reuters
Now Zaha wastes Palace's best chance of the afternoon.
Andros Townsend drives down the right, crosses and the ball goes all the way to the back post to Zaha.
He is sharp enough to make a yard on Craig Cathcart but fires over.
Here's a decision for referee Martin Atkinson to make.
Crystal Palace winger Wilfried Zaha is frustrated after giving the ball away and throws a fist into Sebastian Prodl's back and pushes him to the ground.
Sensibly, Atkinson tells both to calm down and that's the end of the matter.
Amrabat is on in place of Daryl Janmaat.Copyright: Getty Images
It looks as though Watford boss Walter Mazzarri will turn to Nordin Amrabat to bring some life into his side's play.
The Moroccan is getting some instructions on the sideline. He was one of Watford's better players in the first half of the season but has been out since New Year's Day with injury.
More scrappy football from both teams but the home fans get a lift when the ball falls to the feet of Wilfried Zaha.
He wins a corner but it comes to nothing.
Sam Allardyce is, as ever, ferociously chewing gum on the sidelines.Copyright: Getty Images
Crystal Palace press early on in this second half but it is Watford who have the first shot.
Etienne Capoue shoots from outside the box, looking for his fourth goal of the season, but once again the effort is too high.
I've said that a lot in this match.
The players are heading back out.
Valon Berahmi, who was struggling with a hamstring injury before the break, is replaced by Abdoulaye Doucoure for Watford.
We are under way again.
With 53%, Watford just shaded possession in that half and had the only shot on target.
Palace have looked to get the ball wide and get crosses into the box but striker Christian Benteke has had the fewest touches of any player on the pitch, just 12.
And, as the graphic below shows, just one of those was inside the penalty area.Copyright: BBC