How did petr Cech get his scar?

Petr Čech got his scar during a Premier League match in October 2006 while playing for Chelsea against Reading. He suffered a severe head injury due to a collision with an opposing player, which resulted in a fractured skull. The injury required surgery and led to him wearing a protective helmet during matches for the rest of his career. The scar serves as a reminder of that incident and the significant impact it had on his playing style and safety precautions.