Double fist pump from the Watford boss, he's happy with that.
Right, we're done here but for all the reaction join my colleague Andy Cryer here.
Into the first of three minutes of added and this game is heading for a draw.
Watford have shut up shop.
Not all Chelsea fans are happy with Hiddink:
Bamba A Kanyi: Guus Hiddink is tactically naive. How can you bench Hazard and play two defensive midfielders. It was the same against Everton first half we were awful before he change system
What. A. Save!
Heurelho Gomes has been brilliant in this half and he has just produced the save of the game to palm away Diego Costa's goalbound header.
Final change for Watford as new signing Mario Suarez is on for his debut, replacing Etienne Capoue.
Eden Hazard has certainly injected a bit of creativity into this game and he lifts a cross from the left towards the far post for Diego Costa, who can't quite squeeze the ball home.
All Chelsea at the moment.
BBC Radio 5 Live
Former Chelsea keeper Mark Schwarzer on BBC Radio 5 live: "Hazard should have come on earlier – this match was tailor-made for him. He can tip a game on its head with his skill and his ability."
Chelsea then go even closer.
It's a fine team move, Willian releasing Eden Hazard on the right and the forward cuts back for Branislav Ivanovic but his fierce close-range drive is superbly denied by Heurelho Gomes.
Watford are dipping into the energy reserves and are finally pressing a bit now. With 13 minutes left, they are not too far off from snatching the lead as Ben Watson's corner is met by Sebastian Prodl's header, which is deflected just wide by Branislav Ivanovic.
Your wish is Guus Hiddink's command, Charles.
Nemanja Matic is hooked and Eden Hazard is on. He's not had the best of seasons but if ever there was a game for him to produce a bit of 2014-15 magic, this one is it.
Charles thinks Watford have an extra man on the pitch due to Matic's performance:
Someone finally takes this game by the scruff of the net and has a go. Oscar leaves Etienne Capoue standing and fizzes an effort from outside the area towards goal, forcing Heurelho Gomes to dive across and push the ball behind for a corner.
BBC Radio 5 Live
Former Manchester United youth coach Rene Meulensteen on BBC Radio 5 live: “Mourinho trains his players hard and plays the same players week in, week out. That leaves them burnt out and then he moves on. Look at Matic, he didn’t come back the same player this season after the work he put in last year.”
Another change for Watford as Juan Carlos Paredes is replaced by Allan Nyom.
It looks like Chelsea's first change could be up shortly...
Dull, dull game now. Both sides are wasteful in possession and struggling to create anything.
Watford have a corner but Ben Watson can't beat the first man as John Obi Mikel heads away.
Watford boss Quique Sanchez Flores blinks first and makes a change.
Jurado, who disappeared after a bright start, comes off and is replaced by Almen Abdi.
Decent hit by Nemanja Matic.
He has got what seems like an age to position himself for a looping ball on the edge of the area. Eventually it comes down in front of him and Matic strikes the ball sweetly enough, but straight at Heurelho Gomes.
Guus Hiddink leans against the dugout as Eden Hazard warms up close by. Will he be tempted to send on the forward?
This game needs a spark from somewhere.
BBC Radio 5 Live
Former Chelsea keeper Mark Schwarzer: "This game needs a goal. The quality of the game has not been the greatest but it has improved in the second half."
Nemanja Matic clips a pass through the Watford defence, Diego Costa is offside but the flag stays down and he gets to the touchline before cutting back for Oscar, whose first-time effort flies inches wide of the post.
Jose Holebas loves getting forward and he is in the area again, ghosting past John Obi Mikel and he smashes a shot that bulges the net. Some of the Watford fans think it is a goal, before seeing the ball roll down the outside of the sidenetting.
At the other end, Troy Deeney volleys just wide as Chelsea struggle to clear.
Good start to the half.
Chelsea are immediately on the front foot as Cesc Fabregas plays a beautiful ball through the Watford defence to Oscar. You'd back him to score but he rolls the ball onto his right foot and his attempt to find the far corner is blocked.
The ball, though, stays with Chelsea as John Obi Mikel hammers a shot from the edge of the area and it balloons off a Watford player, forcing Heurelho Gomes to push over his bar.
Some hard house music is cut off in its prime as Watford get us back under way.
Tempers were simmering in the first half, will they boil over in the second?
If you want goals, Spain is the place to be...
If you can't actually be there, why not follow our live text of Barcelona against Gary Neville's Valencia.
It isn't going well for G. Nev, with his side 3-0 down.
A quiet night for John Terry so far. We asked you at the start of the night whether he will be at Chelsea next season and 60% of you think he will move on this summer.
Just watching the replay of that incident between Paredes and Costa and I think referee Mike Dean made the right call. Costa certainly wasn't looking for anything as Paredes knocked into him, but then he pushed back in retaliation and Paredes rolled theatrically.
A yellow card each looks to be the right call.
BBC Radio 5 Live
Former Chelsea keeper Mark Schwarzer on BBC Radio 5 live: "Costa is certainly in one of those moods tonight. It is part of his game. He is a fighter, whether you like it or not."
Not a half blessed with genuine chances. The game is simmering though with Diego Costa endearing himself to the home fans.
One minute of added time as Diego Costa gets the ball and boos ring out from the home fans.
Ey up, someone has angered Diego Costa. He is down on the floor, close to Juan Carlos Paredes before swiftly getting himself back to his feet. He then marches towards the Watford man, eyeballing him.
The Chelsea bench all jump up, the players all swarm in to separate the two. Eventually the situation is controlled and the referee books both Costa and Paredes.
Tom Mayhew: Even as a Chelsea fan, I have to admit that Ighalo is the best outfield player on the pitch.
Paul Whittenbury: Chelsea are a spent force but Watford look much the better side here! Need to take a chance before Chelsea wake up though
Douglas Imaralu: A very uninspiring Chelsea display. Weak midfield. Watford bossing the game.
Five minutes until the break and Cesar Azpilicueta fires wide of the far post with a half-hearted effort.
The Hornets have conceded just seven first-half goals in the Premier League this season, I'm not seeing an eighth coming in this game. (Cue goal flash in my next entry...)
Mount a defence of Chelsea's season so far and this might well happen......
Jamie Matthews: re Ewan Lury, yes, bad season. Chelsea should be challenging for the title. 5 points off Liverpool in 5th is unacceptable.
Tom Horton: To Ewan Lury: do you actually need that question answering?! IF they win, the champions are19 points off top!
That's rattled Watford a bit and they've pulled players back, frustrating for Odion Ighalo as he races forward with the ball but has no support and panics, hitting a pass straight to a Chelsea player.
Watford, though, have just two players back defending and it almost proves costly as Cesc Fabregas launches a great ball forward for Diego Costa, who controls and embarks on a bustling, bulldozing run towards the box before his low drive deflects off Craig Cathcart and just beyond the far post.
Watford are showing no fear and why should they? They are higher in the table than Chelsea and are edging further and further forward as the half goes on, with Chelsea retreating as a result.
Can they make this pressure count?
The hosts have really come to life now and look particularly deadly from set pieces as Sebastian Prodl smashes a header at Thibaut Courtois.
Moments later, the Chelsea keeper is tested again when Etienne Capoue drives a shot goalwards from a difficult angle and Courtois palms away.
Watford are well on top.