Arsenal returned to the top of the Premier League with a comfortable 3-1 win over London rivals Chelsea at Emirates Stadium on Tuesday.
A dreadful first-half display from the visitors enabled the Gunners to race into a three-goal lead at the break as Martin Odegaard struck twice inside the first 31 minutes before Gabriel Jesus added a third from close range.
Pierre-Emerick Aubameyang made a surprise start against his former club but was replaced at half-time after touching the ball just nine times and with Kai Havertz leading the line instead, Chelsea improved somewhat after the break.