Watford starting XI: Bachmann, Femenia, Kabasele, Samir, Kamara, Sissoko, Cleverley, Kayembe, Sema, Pedro, King.
Subs: Elliot, Ngakia, Ekong, Masina, Cathcart, Gosling, Hernandez, Sierralta, Baah.
Chelsea starting XI: Mendy, Azpilicueta, Rudiger, Silva, James, Kante, Saul, Kenedy, Ziyech, Havertz, Mount.
Subs: Kepa, Jorginho, Lukaku, Pulisic, Loftus-Cheek, Chalobah, Barkley, Chilwell, Sarr.
Stat: Chelsea have played at home against Watford on seven previous occasions in the Premier League. They have won six and drawn once, scoring two or more goals in all seven meetings.
Watford are already relegated and this could be Roy Hodgson's final match in management. They were thrashed 5-1 at home by Leicester last time out.
Chelsea have secured third spot in the table after a 1-1 draw with Leicester in midweek. Their previous match saw a defeat on penalties in the FA Cup final to Liverpool.
Hello and welcome to live coverage of Chelsea vs Watford in the English Premier League. Kickoff is at Stamford Bridge at 4pm UK time.
Kickoff! We get going at Stamford Bridge. Neither side have anything to play for today.
Kenedy making his first Chelsea appearance since 2017. He is playing left wingback today with Alonso not in the squad.
Chelsea have started well. Kenedy with a nice dribble past two men but Mount overruns the ball near the byline and it goes out for a goalkick.
CHANCE! Mount wins the ball and sends Havertz behind through on goal. He gets his shot away but Buchmann stands tall and saves it well. The German should have scored.
Chelsea are totally on top. Kenedy crosses into the area, it bounces around the Ziyech nearly gets on to a loose ball before Kamara clears it.
BLOCK! Kenedy drives a shot for Chelsea. It's blocked and breaks to Saul who fires a shot which deflects wide off Mount.
GOAL, CHELSEA, HAVERTZ, 1-0! The ball switches out to Kenedy down the left. He crosses low and Havertz taps home from close range. Too easy. Chelsea 1-0 Watford.
BLOCK! Watford put a ball into the area. It falls for Sissoko to fire off a shot but Rudiger blocks well. Sissoko then fouls Mount to stop a counter attack.
WIDE! Mount wins the ball high up, Havertz backheels to Saul but he drives his low shot just wide.
Foul: Sema brought down by Chelsea captain Azpilcueta who could be playing his final match for the club today.
WIDE! Ziyech with a great cross from the right. Mount is totally free but loses it in the sun and heads wide of goal.
It's pin ball in the Chelsea box. Mendy punches clear and Kayembe drives a shot wide of the post for Watford.
Watford have grown into this in the last few minutes. A good attack down the right is cleared by Azpilicueta for a corner.
Femenia puts in the Watford corner but it is easily cleared. That's very wasteful.
SAVE! Kamara with a low cross from the left. It finds it's way all the way to Femenia at the back post. He shoots and Mendy pushes the shot away.
Not much action here as Chelsea have lost their spark a bit. We've not seen much of James down the right so far.
Chelsea are stroking the ball around in their own half with Watford holding a good shape, as you would expect from a Hodgson team.
CLOSE! Chelsea nearly have a chance as Havertz receives in the box. He finds Kenedy but the Brazilian is crowded out in the area.
CHANCE! Another clear opening for Havertz. Mount again turns well and sends the German through on goal but his shot is weak as a Watford defender comes across and the goalkeeper saves.
BLOCK! James with a good cutback, it finds Mount on the penalty spot and his strike is blocked away for a corner.
HALF TIME. Chelsea lead 1-0 through Havertz. A dominant half but it should be a couple more goals for the Blues. Join us in 15 minutes for the second half. Chelsea 1-0 Watford.
CHANCE! Havertz with another missed chance. He is free in the box, just the goalkeeper to beat and Havertz can only strike the bar.
Kickoff! 1-0. The second half gets going, no changes.
CHANCE! Saul with a loose ball in midfield for Chelsea. It leads to a clear chance for Joao Pedro in the box but Mendy makes a very good save.
Foul: Sema is fouled by Kante on the edge of the Chelsea box. The home team have been very sloppy since the game resumed.
Lots of Chelsea possession here but very little penetration or urgency.
Ziyech gets it on the right, twisting and turning but putting it straight into the arms of the Watford 'keeper.
Ziyech sends Havertz away on the break. Kante and James sprint to arrive in the box in support but the cross is poor and gets easily cut out.
SUB, CHELSEA: Kenedy goes off with cramp, Sarr enters the action.
Chelsea are badly lacking any spark or ideas here. Not many chances created.
SHOT! Ziyech turns and shoots from distance. It's a low effort but Bachmann is equal to it.
SUB, CHELSEA: Rudiger off for Barkley. His final appearance for the Blues.
Chelsea in a back four now. Barkley playing as number ten.
CLOSE! Ziyech win a fine pass for James' run from deep for Chelsea. He goes past Samir but Cleverley gets back to challenge him and deny a possibly goal.
WIDE! Ziyech takes a corner, it falls to Mount in the area but he curls his shot past the post.
SAVE! Kante wins the ball, it falls for Barkley 25 yards out. He strikes well but Bachmann pushes it away for a corner.
SUB, WATFORD: King off, Hernandez on.
Break in play now due to a Watford injury. Kamara is down with a knock.
SUB, WATFORD: Kamara off, Masina on.
Sissoko with a good run and pass forward but Mendy sweeps up well and gets it clear. Good goalkeeping.
SUB, WATFORD: Gosling on for Kayembe.
Barkley is having some lovely touches. He slides a nice through ball for the run of Havertz but he takes too long and Watford put him off.
GOAL, WATFORD, GOSLING, 1-1! The Blues have thrown away more points at home it seems. Gosling gets free at the back post and heads home Masina's fine cross. Chelsea 1-1 Watford.
FULL TIME. Chelsea get the win on the final day but what a poor 2nd half and game overall. Barkley got the winner and Chilwell made his return in Hodgson's final game as a manager. Chelsea 2-1 Watford.
+1' GOAL, CHELSEA, BARKLEY, 2-1! James with some great play down the right and he crosses to the back post when Barkley heads into the net. He's been really good since coming on and deserves that. Chelsea 2-1 Watford.
Added time: three minutes.
SUB, CHELSEA: Mount off, Chilwell on.