“The two managers who have defined English football’s recent craze of using a three-man defence are Antonio Conte and Thomas Tuchel. In his debut campaign at Chelsea, 2016-17, Conte became the first manager in half a century to win the English league title with a back three. Four years later, Tuchel used a similar system at the same club, meaning Chelsea became the first team in two decades to win the European Cup with a three-man defence. …”
The Athletic – Michael Cox