What happened actually isn't unheard of:

Cardiac arrest occurs when electrical disturbances cause the heart to suddenly stop beating. It may be fatal if not immediately treated, but it can be reversed by CPR and shocks from a defibrillator, according to the American Heart Association.

Sudden cardiac arrest among young athletes is rare but not unheard of. An examination of NCAA student-athlete sudden deaths between 2004 and 2008 found cardiovascular-related sudden death was the leading cause of death in 45 cases, or about 9 each year, according to a 2011 study.

One of the most well-known cases was Hank Gathers, a star forward for Loyola Marymount University who collapsed and died during a conference tournament game in 1990.

These relatively rare events in the past will be used to cover up the increased cardiac episodes that we will see from the vaccines.

https://edition.cnn.com/2023/07/25/sport/bronny-james-cardiac-arrest/index.html