#4 Hit: Pierre-Emerick Aubameyang
Aubameyang did well to break the deadlock with a header when he did, at a stage in the game where Arsenal were firmly ahead. The movement and anticipation he displayed in the build-up to Calum Chambers' cross was crucial - effortlessly ignoring the attention of Emerson and making no mistake.
Plenty is said about his overall play and whether he does contribute to more than just goals in games, like linking midfield with attack, dropping deep and helping his teammates. He certainly did the latter against Chelsea: completing three tackles, two interceptions and clearances over the 90 minutes as a motivated captain that didn't deserve to lose here.
Aware that his side's attacking influence was dwindling, he was unafraid to track back and support his teammates - sometimes too eager - but his defensive contributions didn't go unnoticed. There wasn't much he could have done differently for Chelsea's two goals: the first was direct from a setpiece, while their second was a counter-attack as he waited patiently in the box for Maitland-Niles' cross.
It didn't arrive and instead was partially headed clear by Antonio Rudiger. 15 seconds later, Chelsea had snatched the lead. It was a cruel ending to a game Aubameyang never stopped running in, trying to create for teammates or fashion something himself. Arsenal only have themselves to blame.