Hector Bellerin's stunning injury-time strike earned Arsenal a point against Chelsea in one of the most entertaining matches of the Premier League season so far.
After a keen contest, Hector Bellerin’s late strikes earn the Gunners a draw.
Jack Wilshere had his first Premier League goal since May 2015 to bring the gunner’s 63rd-minute lead, Eden Hazard had the equalizer after a perfect penalty shot four minutes later.
Arsenal manager Arsene Wenger labeled Anthony Taylor's decision "farcical", adding "you could give 10 penalties like that a game".
Chelsea must have thought they had secured all three points when Marcos Alonso flicked home substitute Davide Zappacosta's low cross after 84 minutes.
Sanchez saw a shot come off both posts after a stunning stop from Courtois, before the Belgian pushed away a low strike from Lacazette.
The French summer signing was a constant menace to the Blues' defense. He had another low effort come off the heel of Courtois and was denied again when his turn and shot was pushed around the post.
However, it was the unlikely sources of Wilshere and Bellerin - with just two goals between them in all competitions this season at kick-off - who managed to find a way past Courtois.