This article documented 331 confirmed cases of sudden deaths and cardiac arrest in competitive athletes from 2014-2018 in the US alone. Sudden deaths in young atheletes are very well known and not uncommon. The most frequent underlying diseases include hypertrophic cardiomyopathy and some inherited genetic disorders. Your "statistics", however, have been fackchecked by many news outlets to be unreliable. BTW, by the same logic, one can also conclude that some of those deaths may also be due to COVID itself. Some people don't even know they were infected.