Arsenal hit two quick fire goals at the start of the second half against Crystal Place but there was more than a little controversy about the goal that pout the Gunners in front.
Having been a goal down at half time, the Gunners came out of the blocks like a scolded cat in the second period with Granit Xhaka levelling the gamer with a scintillating free-kick, but the big talking point of the match was still to come.
It was Xhaka who sent the ball into the box with the ball flicked on by Alexandre Lacazette to the back post were Pierre-Emerick Aubameyang was on hand to stroke the ball home for yet another goal this season.
Simple, or so we thought.
The Crystal Palace defenders were left complaining about something and closer inspection of the replays confirmed exactly why...
The flick on from the former Lyon striker actually came off his hand and should have been pulled back for a clear hand ball but the the referee inexplicably let the goal stand to see Arsenal take the lead in what felt like a massive match at both ends of the table.
The Arsenal players understandably didn't care and who can blame them as they wheeled away to celebrate another goal for the former Dortmund striker but this was a major moment of bad luck for the eagles.
Roy Hodgson and his Palace squad have been under immense pressure of late with a series of poor performances and a refereeing decision like this one was the last thing they need.
