#2 Arsenal wasteful in the first half but fight back to make it 2-2
Before Morata scored the second, Arsenal's best chance fell to arguably their best goalscorer Pierre-Emerick Aubameyang. But the Gabon striker, surprisingly, saw his shot sail over the crossbar.
That seemed to deflate the Gunners and after Morata made it 2-0, Mkhitaryan missed a similar chance, shooting over the bar. Unai Emery, who had masterminded these attacking moves, was a picture of despair on the touchline, cursing in disbelief before encouraging his players.
Arsenal had found a weakness, though - Chelsea's full-backs. Alonso was having a tough time dealing with Hector Bellerin going wide while Mkhitaryan cut in behind him. Unfortunately, he did not receive much help from Willian who had a rather poor outing.
A series of moves saw Arsenal simply cut the ball back to the centre of the box and that is how Iwobi got his goal. Mkhitaryan's goal was even better as he pounced on a loose ball unleashed a shot from outside the box that beat Kepa at the post.
In all, it was a thrilling first half with both defences struggling and the Gunners should have been in front considering the kind of chances they had to go ahead.