Mauricio Pochettino absolved Tottenham defender Juan Foyth of any blame after a costly error in the north London derby, lauding him as Spurs' best player "by far".
Pierre-Emerick Aubameyang's second goal of the day levelled things up in style just before the hour at the end of a devastating Arsenal counter, after his first from the penalty spot had been overturned by Eric Dier and Harry Kane.
Alexandre Lacazette then put the Gunners ahead 16 minutes from the end with a deflected 20-yard strike after Foyth had been robbed of possession just inside his own half.