I am 13 years old and I have been playing baseball since I was 4 years old. Throughout the years, I have seen young baseball players suffer chest injuries during games. In severe cases, they call this type of injury: commotio cordis (a blow to the chest that could result in cardiac arrest).  Though chest protection shirts exist, they are not mandatory to wear in little league/youth baseball programs.  I conducted a science fair experiment testing the two most popular brands of protection shirts and how they perform when hit by a 46 mph pitch. There was significant benefit from wearing a shirt with a firm plastic chest plate versus the alternative.  Help me protect the players of the game that I love from unnecessary injuries by making protection shirts a mandatory gear for youth baseball athletes.