Crystal Palace came from behind to draw 1-1 at home to 10-man Arsenal.
The Eagles have now gone four successive league matches without defeat against Arsenal for the first time after a 2-2 earlier in the season.
Arsenal had the better of the opening exchanges and went ahead after 12 minutes when Pierre-Emerick Aubameyang finished off a well-worked team goal.
But Palace worked their way back into the game and were rewarded with a Jordan Ayew equaliser nine minutes after the break when his shot took a big deflection off David Luiz and into the goal.
Centre half Luiz almost atoned for his error by nodding a corner onto the roof of the net.
The Gunners went down to 10 men in the 67th minute after the video assistant referee sent off Aubameyang for a reckless foul on Max Meyer by the touchline after he was initially shown a yellow by referee Paul Tierney.
James Tomkins, who was captain in the absence of the banned Luka Milivojevic, had a header cleared off the line.
Eagles keeper Vicente Guaita then made an excellent save from Nicolas Pepe onto the post with a subsequent dive at the feet of Alexandre Lacazette to keep the scores level.
Palace: Guaita, Riedewald, Cahill, Tomkins, Kelly, McArthur, McCarthy, Kouyate, Meyer (Tosun 68), Zaha, Ayew.
Not used: Hennessey, Dann, Wickham, Woods, Kirby, Pierrick.
Arsenal: Leno, Maitland-Niles, Sokratis, Luiz, Kolasinac, Torreira (Guendouzi 45), Xhaka, Pepe, Ozil (Martinelli 70), Aubameyang, Lacazette (Nelson 90).
Not used: Martinez, Holding, Willock, Saka.