You're 1-0 up against your North London rivals and holding firm in the face of some second-half pressure - the last thing you want to do is this.
Arsenal had taken the lead against Spurs through Mathieu Flamini's first-half strike.
https://twitter.com/hughwizzy/status/646765164977594368
But then Calum Chambers, in trying to cut out a Nacer Chadli cross, sent the ball past his own goalkeeper.
It's David Ospina who we feel the most sorry for.
