ARSENAL threw away two points after a pair of suicidal moments on the defensive end gifted Watford a draw at Vicarage Road.
Pierre-Emerick Aubameyang put the Gunners in a commanding position with two ruthless finishes in the first half.
2 Aubameyang scored twice as Arsenal dropped two pointsCredit: Reuters
Watford came flying out the traps in the second but the visitors looked comfortable until Papastathopoulos' moment of madness.
Collecting the short goal-kick, he passed it straight into the path of Tom Cleverley who fired the Hornets back into the game.
And with Arsenal desperate to see out of the contest, David Luiz conceded a penalty when Roberto Pereyra.
Here, Richard Forrester rates how well Arsenal players did as they blew the chance to move into third spot.
MADE two smart saves in the first half but his short goal kick was the catalyst to Watford's goal.
Was nowhere near the penalty and will feel let down by his team-mates.
Made a hugely important save to deny Doucoure at the death.
WAS troubled by Deulofeu throughout and all of Watford's attacks came down that left side.
Produced a lung-busting run to assist Aubameyang for Arsenal's second of the game.
AN absolute howler to gift Watford a way back into the game.
His pass from Leno's goal-kick found Cleverley and he made no mistake.
Sheer madness from the Greek international.
THE culprit once again as he conceded a penalty for Watford's equaliser.
It was clumsy and lazy and he stuck out a wayward foot to trip the opponent in the box.
2 David Luiz conceded a penalty as Watford fired home the equaliserCredit: Reuters
BRILLIANT assist to set Aubameyang up for the opener.
His defensive ability has been called into question but he was solid as a rock today.
STRUGGLED to stamp his authority having been bossed by Doucoure.
Didn't manage to dictate the pace of the game but stuck his foot into tackles during a scrappy affair.
WAS a lucky boy after twice giving the ball away in dangerous positions.
It could have cost Arsenal if Watford had been more prolific – certainly not his best day at the office.
HIS performance probably went under the radar with Ozil also starting but worked tirelessly in defence, offering little going forward.
Was subbed off for Joe Willock on the hour mark.
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ALL eyes on the German making his first start of the season – and boy, he didn't disappoint.
Took a while to get into the contest but was at the heart of Arsenal's second goal.
Faded out of the game before being replaced by Reiss Nelson on 70 minutes.
SO clinical in front of goal. His first was brilliant and his second put Arsenal in a commanding position.
He's scored 34 in 57 league appearances now. It's vital Unai Emery keeps him fit.
NOT quite happening for him in an Arsenal shirt just yet.
Showed glimpses but once again lacked end product – he's almost trying too hard to impress.
Willock (on for Ceballos, 60)
ALMOST scored one of the goals of the season with a terrific solo run until he was eventually tackled.
But should have squared to his team-mate instead of seeing the headlines.
Torreira (on for Guendouzi, 67)
WAS thrown into the thick of the action with Arsenal under the cosh and held his own.
Provided little going forward with Watford piling men forward.
Nelson (on for Ozil, 71)
STRUGGLED to make an impact.
Was brought on to help with the counter-attack but his final delivery was poor.