Arsenal looked finished. Trailing by two goals, there were just 13 minutes to go and the story looked set to be about a statement win for Mauricio Pochettino and Chelsea; Arsenal goalkeeping woe, too.
David Raya was at fault for the Chelsea second, allowing a swirling ball in from Mykhailo Mudryk to sail over his head and drop into the far corner. Was it a visionary lob from the left or an intended cross? Only Mudryk knows.