The Chiesa effect is one of the most significant impacts that has been seen in the history of football. It was first introduced by former Juventus player and coach Massimo Chieffo, who used it as a way to help his team improve their performance on the pitch.

The Chiesa effect refers to the idea that players should be given more freedom and responsibility when they receive the ball. In other words, they should be allowed to make decisions on how to use the ball without having to rely on the coach or teammates for guidance. This approach has been successful for many teams, including Juventus.

One of the key statistics associated with the Chiesa effect is the number of assists made by players under this system. According to research conducted by the Italian football magazine Calcio Mercato, the average number of assists per game for players who received more freedom and responsibility was significantly higher than those who were limited in their movements. This means that players who were given more freedom and responsibility were able to create more chances for their teammates and ultimately score more goals.

Another statistic that highlights the impact of the Chiesa effect is the number of goals scored by Juventus since its introduction in the mid-1990s. Since then, Juventus has won seven Serie A titles and two Champions League trophies, all while using the Chiesa effect to great effect. The team has also produced some of the best young talents in the world, such as Paul Pogba, Leonardo Bonucci, and Marco Verratti.

Overall, the Chiesa effect has had a profound impact on Juventus and football as a whole. By giving players more freedom and responsibility, the team has been able to produce some of the greatest players in recent years and achieve incredible success on the pitch. While there are always risks involved with any change to a system, the Chiesa effect has shown that sometimes new approaches can lead to positive outcomes for both teams and fans alike.