#4 Jorginho dominates on the ball but exposed off it, Mesut Ozil disappoints
With Chelsea playing a 4-3-3, it wasn't Kante anchoring their midfield. It was Jorginho in the middle with Kante and Barkley to either side. While Barkley was in a pure attacking role, Kante was tasked with the box-to-box role.
Sarriball requires a team to dominate possession and Chelsea saw more than 60% of the ball. And their attacks flowed through Jorginho in the middle of the park.
The problem was that Arsenal's Mesut Ozil - the closest player to the Italian - was not up to the mark in putting pressure on the midfielder and allowed him both space and time to make decisions.
It was the former Napoli man's pass that opened up Arsenal for the first goal and his pass success rate was in the 90s.
But when Arsenal had the ball, Jorginho was exposed time and again by either Iwobi or Mkhitaryan who made runs inside on either side of him. With only one holding midfielder, that is another area where Chelsea were exposed.
Meanwhile, Ozil was unable to affect proceedings, especially in the second half, and Emery had no choice but to take him off with Aaron Ramsey waiting to take his place.