Arsenal let a two-goal lead at half-time slip as they drew 2-2 against Watford.
Pierre-Emerick Aubameyang opened the scoring after 21 minutes, turning and firing a shot past Ben Foster.
He then converted from close range to double Arsenal's lead 11 minutes later.
The Gunners had been shaky playing out from the back and it cost them a goal in the second half when Sokratis passed straight to Tom Cleverley.
And Watford would complete the comeback in the final 10 minutes.
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David Luiz's rash challenge gave Watford a late penalty, which Roberto Pereyra converted to level the scores.
Abdoulaye Doucouré had the chance to score the winner in the dying moments but his effort from close range was saved by Bernd Leno.
One man who was unpopular with Watford fans on the day was Matteo Guendouzi.
The French youngster got into a scuffle in the first half with José Holebas.
Guendouzi ran across to defend Nicolas Pepe and ended up getting a yellow card for his troubles.
Watford supporters didn't take kindly to his actions and decided to boo him for the rest of the game.
And, as Guendouzi came off in the 67th minute, he decided to give something back.
As he made his way to the bench he decided to remind the home supporters of the scoreline.
Watch it below:
That was all well and good doing that at the time. His actions would have gone down well with his own supporters.
But, it's fair to say actions would go on to backfire, as Watford stole a point late on.
Matteo, if you are going to taunt the opposition supporters, make sure there isn't much chance to make yourself look silly.
Watford's Twitter account then decided to respond to Guendouzi's gesture after the game.News Now - Sport News