Mikel Merino led Arsenal to a 1-0 win against Chelsea in the Premier League. Merino’s first-half header settled the London derby at the Etihad Stadium and saw second-placed Arsenal move within 12 points of leader Liverpool.

As coordinated as those attacking moves are Arsenal have become known this season for their set-piece proficiency. They hadn’t scored from corners in a while, but against a Chelsea team who seemingly don’t know how to make the most out of their own set-piece specialist they would get back in track with a Mikel Merino headed flick.