City claimed the first major trophy in their four-pronged assault on silverware but this stale final, which was goalless after extra time, will be remembered for an almost unprecedented challenge to Sarri's authority by Arrizabalaga.
The £71m Spanish keeper, Chelsea's club record signing, had been struggling with cramp in the closing stages of extra time and Sarri decided to send on substitute Willy Caballero, who saved three penalties in a shootout to help Manchester City win this trophy against Liverpool in 2016.
Arrizabalaga refused to come off and Sarri backed down in a rage, before his misery was completed as City won the shootout, with Raheem Sterling scoring the winning penalty.
CARABAO CUP FINAL 2019