Hector Bellerin's stoppage-time goal rescued a 2-2 draw for Arsenal in a pulsating and controversial Premier League clash with Chelsea.
It looked like Chelsea had come from behind to triumph when Marcos Alonso struck six minutes from time, after Jack Wilshere's first league goal since May 2015 had been cancelled out by an Eden Hazard penalty.
But the Gunners would not be beaten and Bellerin punished Alonso's poor clearing header with a fine finish for a share of the points - though there was still time for Chelsea's Davide Zappacosta to hit the crossbar.
Hit the video at the top of the story for highlights from a thrilling Emirates encounter.