Not too uncommon. Two summers ago a player in our senior softball league collapsed on the field when his heart just stopped beating. Fortunately there were several retired firefighters on the field who immediately started CPR and kept him alive till the EMS arrived.
Apparently he had the same genetic heart defect that caused the death of a sister years ago.
Until that event, he had no history of having any heart problems.
Just out of curiosity, We’re they vaxxed?