Chelsea stun Arsenal at the Emirates Stadium in a London derby as they come back from a goal down to score 2 and turn the game around. It was a battle between two very young managers in Frank Lampard and Mikel Arteta and Lampard emerged victorious. Chelsea started the game with a 3-4-3 but eventually crumbled to Arsenal's high press and pace. Emerson's ball watching lead to an Arsenal goal pretty early in the first half as he failed to mark Arsenal talisman Aubameyang who opened the scoring with a brilliant header. Frank Lampard was forced to make a change early on in the first half Emerson was subbed off to bring in Jorginho to switch to a 4-3-3. Lampard showed glimpses of improvement in his in game management with an early change which lead to Chelsea gaining momentum slowly. Jorginho's presence in the midfield brought composure and control to the otherwise chaotic and struggling Chelsea.