I regret to inform everyone that Google is a free machine service available to us all, but since you asked...
1. Here's a study that categorizes SCD in athletes. Its not 100/yr its like 66. And half of those are just HCM or other structural defects. 22% are blunt trauma. That leaves like... 15-20 caused by rando conditions like heat stroke. Note what is not mentioned - myocarditis. I mean there may be a smattering but its vanishingly rare even as a condition itself to have. In the US 22 out of 100,000 people.
Sudden deaths in young competitive athletes: analysis of 1866 deaths in the United States, 1980-2006 - PubMed
2. This article covers it pretty comprehensively
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Cardiovascular Magnetic Resonance Findings in Competitive Athletes Recovering From COVID-19 Infection
3. Finally this screenshot of
THIS ARTICLE captures why the severe myocarditis diagnosis should be concerning. Compare normal Myocarditis prevalence which is 22 out of 100,000 people to these numbers:
View attachment 62793
I mean, this thing is around 8-9 months, and so we are not going to have conclusive evidence but at some point a reasonable person has to look at the dots and get their head out of their ass. This virus has killed 320,000 people since March in the US. Keontae Johnson is likely very lucky not to be part of that statistic.