Sarri ball:
About Sarri ball a description is given here:
https://www.goal.com/en-in/news/what-is-sarriball-how-chelseas-tactics-could-change-after/pqijnswg5x3x1lpvp5yulnab2
It says this:
So the tiki taka passing is meant to confude the defenders so they leave a gap somewhere, for the attackers to exploit.
As such it's not something new.
It's what Jose Mourinho said he was going to do back in 2014 (and he did win the premier that year in fact).
So it's Mourinho ball !
It does n't work because our players bar Hazard are slow like Thames barges.
So the vertical tiki-taka more often than not becomes the safe pass backwards, as if we are playing to slow things down.
In addition when the gap is finally found, it's Morata at the receiving end who has managed to place himself in an offside position.
With some other players or with some other level of opposition it might work.
From all those systems, I prefer the Conte system, when we also had Diego Costa in the team.