Arsenal are cruising back up to second here but no shame in the defeat for Watford. For an hour, they gave as good as they got and caused Arsenal more than a few moments of worry.

Great work from Olivier Giroud as he attacks some space to meet a corner, directing a powerful header towards goal that brings out a good save from Heurelho Gomes.

Len: Arsenal turned a poor first half into a commanding win, something title-winning teams are required to do

Abhishek: Move over Hazard, Ozil and Payet. Hector Bellerin continues to create goals.

Ian George: All you Ozil haters can eat your words again, and again, and again. He is a footballing genius.

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Watford fans breathe a sigh of relief as Alexis Sanchez goes off, but coming on in his place is Alex Oxlade-Chamberlain. His pace against a tiring defence is not what the home fans will want to see. Mikel Arteta also comes on for Arsenal, replacing Mesut Ozil.

Watford also make a substitution as Ikechi Anya is replaced by Juan Carlos Paredes.

Image source, Opta

I've seen a few critical comments about Aaron Ramsey's performance before his goal but he has worked hard today, getting up and down the pitch and, although he failed to score from a couple of good chances earlier, he was getting in the right positions.

Faddi S: Form is temporary, class is permanent! All the Ozil detractors need to learn that.

Efultang: Arsenal picked Watford apart there with pure class. No respite!

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BBC Three Counties Radio
Former Watford midfielder Derek Payne at Vicarage Road

"Great play by Arsenal, you must say that. It's what we know they can do, but Watford were too open there. Much too easy for the Gunners, who have been very, very clinical with excellent movement off the ball. They are a top side."

 Watford make their first change of the game as winger Steven Berghuis comes on for. A thankless task to come on at this stage of a game. 

Arsenal did not have things their own way for large periods of this match as Watford gave them a real tough test, but the Gunners slugged it out before effectively wrapping up the win with six deadly minutes. The sign of a title winner?

BBC Three Counties Radio
Former Watford midfielder Derek Payne at Vicarage Road

"Ozil at the heart of this again - what an intelligent player. 

"Arsenal are showing their class, and they are such a different animal when they're winning. They are so much more confident."

Gemma Blackman: What's with the lit phones thing at Watford? Can #BBCFootball, external shed any light?

Boom-tish, Gemma...

Image source, Getty Images

Despite the goal, Arsene Wenger presses on with a change as a very quiet Theo Walcott is replaced by Olivier Giroud.

BBC Three Counties Radio
Former Watford midfielder Derek Payne at Vicarage Road

"The ball travelled from one end of the pitch to the other, just what Arsenal are very good at. Slick and quick, and the ball in from Ozil was disguised and was sheer quality. 

"Did Watford switch off for a moment? Well, now they're one behind."

Yellow for Arsenal defender Per Mertesacker after he lunges in on Odion Ighalo just as the Watford striker tried to get away on an attack.

Image source, Reuters

Lots of Watford fans have turned on the flash lights on their phones and are waving them in the air. Is that a thing now? Pretty sure we are not at a One Direction concert...

BBC Three Counties Radio
Former Watford midfielder Derek Payne at Vicarage Road

"Arsenal are pinning Watford back now, playing excellent, patient football. Watford needs to regain a bit of possession, just to take the sting out of the game."

Better from Arsenal as Mesut Ozil and Alexis Sanchez combine, before the latter lets fly with a low shot that Heurelho Gomes has to push behind for a corner. That comes to nothing and Arsene Wenger gives Olivier Giroud the nod to warm up.

Image source, Getty Images