David Luiz's free-kick does not have enough dip on it and sails narrowly over the crossbar.

Five to go.

Eden Hazard exchanges passes with Diego Costa and earns a free-kick on the edge of the box after being bundled over by Gaston Ramirez.

David Luiz over it.

This is either a goal or blazed over...

Pat Nevin
Ex-Chelsea winger on BBC Radio 5 live

Chelsea are playing at about a four out of 10 comparing them to their recent standard.

Eden Hazard has also been quiet this half but that's judging by HIS standards... 

Into the last 10 minutes.

Chelsea have not conceded in their last five league games, they are edging closer to a sixth.

A first change for Chelsea.

Nathaniel Chalobah on, Pedro off.

Pat Nevin
Ex-Chelsea winger on BBC Radio 5 live

This game isn't over, not by a long shot. 

There will still be chances for Middlesbrough but they have to be better at decision making. 

Image source, Reuters

First save of the game from Thibaut Courtois.

It's a pacey break forward from Middlesbrough, involving Adam Traore obviously, who crosses the ball into the box for Alvaro Negredo.

The Spaniard flicks the ball up and volleys a shot which Courtois gets down to his left to save.

The Beast almost made me eat my words.

Middlesbrough on the back foot and a goal behind, but still in this game.

Just ask Arsenal, who equalised late on against Manchester United on Saturday.

13 minutes remaining.

No, no, no.

N'Golo Kante, for the first time in his career, plays a very sloppy ball inside his own half which is intercepted by Adama Traore.

The former Aston Villa man skips forward but blazes his shot over the crossbar.

Alvaro Negredo is not happy, was he expecting a pass??

Image source, Reuters

Getting very scrappy now, little rhythm in the game.

Calum Chambers is the next man in referee Jon Moss's book after hauling down Diego Costa on half way.

Another change by Aitor Karanka.

Former Ajax man Viktor Fischer jogs on for Adam Clayton. An attacking change.

Middlesbrough clear the ball, but it's collected by a Chelsea man and coming back at them. Marcos Alonso scuffs a shot from a good position.

Chelsea midfielder N'Golo Kante is booked for a tug on Adam Forshaw.

Pat Nevin
Ex-Chelsea winger on BBC Radio 5 live

Image source, Reuters

Is anyone going to mark Victor Moses for the last 20 minutes?

This will change that 11-behind-the-ball routine.

A change for Middlesbrough, as Stewart Downing comes on for Fabio, who didn't have the best of games.

Pat Nevin
Ex-Chelsea winger on BBC Radio 5 live

Chelsea finished the first half really sharp and started the second half even more sharp but I have seen very little of Eden Hazard since then. 

Image source, Reuters

David Luiz is booked by referee Jon Moss for an earlier infringement.

Meanwhile, Diego Costa plays through Victor Moses in on goal, but the Nigerian's shot goes over the crossbar.

Can Chelsea get the second?

Sublime move, inches away from being finished off.

David Luiz does brilliantly to step out of defence and play a cross-field ball onto the head of Diego Costa, who nods it down to Pedro.

The Spaniard shows technique with a cute left-footed shot which cannons back off the bar.

Just under half an hour left, the Boro supporters are screaming for their side to push on. A goal from the hosts will be very much against the run of play.

Image source, Getty Images

Tell you what, Chelsea are dominating but are only one goal ahead.

Middlesbrough may just be able to nick one.

Speedster Adam Traore has a shot blocked inside the area, while the Blues have to scramble to clear Fabio's looping cross.

Image source, PA

Chelsea popping the ball around nicely leaving Middlesbrough chasing shadows.

The home side are behind but have maintained their 11-behind-the-ball shape.