Alexis Sanchez's equaliser earned 10-man Arsenal a vital point as Spurs missed the opportunity to go top of the Premier League in the north London derby at White Hart Lane.
Aaron Ramsey's instinctive flick gave Arsenal the lead just before the interval - but the game looked to have turned in the space of seven minutes before the hour.
Arsenal's Francis Coquelin was sent off after 55 minutes after receiving a second yellow card for a foul on Harry Kane, leaving the door open for Spurs to respond with two quick goals.
Toby Alderweireld scored at the far post before Kane curled in a magnificent angled right-foot finish after 62 minutes to put Spurs in command.
But Arsenal refused to back down and equalised 14 minutes from time when Spurs keeper Hugo Lloris let Sanchez's shot squirm through his grasp.
In contrast Arsenal's David Ospina, in for the injured Petr Cech, was heroic with outstanding saves from Erik Lamela, Harry Kane and Christian Eriksen.