Romelu Lukaku scored his first goal as Thomas Tuchel’s team deservedly beat Arsenal. Lukaku started at the Emirates after his £97.5m signing from Inter Milan and looks to have given the Blues an ominous new dimension.
Lukaku was involved in the build-up and then finished the move from close range into an empty net from Reece James’ pass.
James scored the second goal as he slammed the ball into the roof of the net from Mason Mount’s pass to make it two.
Lukaku almost made it 3-0 but his header was tipped onto the bar by Bernd Leno.
Arsenal, missing centre-back Ben White through Covid, have now lost more London derbies in the Premier League this season than last – after just two games.
It is only the third time Arsenal have lost their opening two Premier League matches in a season.