Roberto Firmino's late equaliser saw Arsenal's lead at the top of the Premier League cut to six points after an incident-packed encounter with Liverpool at Anfield.
The Gunners were in cruise control with a two-goal lead inside the first half-hour as they went in search for their first win at Liverpool since 2012, but were left bitterly disappointed as they paid the price for losing their discipline at times.
Gabriel Martinelli pounced on sloppy Liverpool defending to put Arsenal ahead after eight minutes then Gabriel Jesus rose unmarked between Virgil van Dijk and Andy Robertson to head home at the Kop End.