Our winning run is over after a late penalty pegged us back in south London.
Luka Milivojevic fired past Bernd Leno after Granit Xhaka was adjudged to have brought down Wilfried Zaha.
It was the Crystal Palace’s captain’s second spot-kick of the day - he had given Palace the lead late in the first half after a foul from Shkodran Mustafi on Cheikhou Kouyate.
In between Milivojevic’s interventions, we recovered from a slow start to turn the game on its head in five second-half minutes.
First, a stunning free-kick from Xhaka pulled us level.
It’s a goal that will live long in the memory, a vicious effort from just outside the corner of the penalty area that flew into the top corner.
Pierre-Emerick Aubameyang put us ahead, goalline technology confirming that his far-post finish had just crossed the line after Alex Lacazette got a touch on a right-wing corner.
But replays showed the assist from Lacazette was a handball - and that went unnoticed.
Once again we had needed a second-half improvement, and once again we got it.
But Palace had the final word and, for the first time since August, we had to settle for a point.
HOW IT HAPPENED
WHAT IT MEANS
Unai Emery rotated his squad after the Europa League trip to Lisbon.
In came Shkodran Mustafi, Lacazette, Hector Bellerin, Lucas Torreira, Mesut Ozil and Alex Iwobi.
Sokratis, Aaron Ramsey, Danny Welbeck, Mohamed Elneny and Henrikh Mkhitaryan dropped out of the starting line-up, and so did Stephan Lichtsteiner.
But the Swiss defender came on at half-time with Bellerin unable to continue.
It’s back to the Carabao Cup on Wednesday with Blackpool the visitors at Emirates Stadium.
That’s followed by a huge Premier League game at home to Liverpool on Saturday.
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