Also a guy dropping unconscious without obvious cause during a professional sports game, with his teammates having to shield him from view. That time, there was also a lot of back and forth about the game resuming - in the end, they made them replay it the very next day, which was definitely not the best way to handle it (though in their defense, a championship like that runs on a much tighter calendar than a NFL season - postpone any game for more than a few days and the entire thing gets stuck).
Yeah, scary how some people lose all sense of perspective, or just don't seem to realize that professional athletes are actual flesh and blood people, not just figures on a screen who only exist for their amusement.
I'm not sure what to think on what to do about such occurrences though - it may be possible to do more or better screening for heart conditions that can lead to sudden cardiac arrest like that, but when something like that does pop up in a screening, then what, you ban that person from playing professional sports? It can happen in all sorts of other situations, too. Or preventatively implant pacemakers in all of them?
Definitely a more complicated debate than the one about the damage that American football itself (or rugby) does to the people playing it.