From another article I was somewhere last night I believe the idea is more having N95 level material in the face masks, not having it inside and for to their nose and mouth like an actual medical mask. I assume just to have some barrier to catch more droplets from hard breathing etc.
Doesn’t seem like that would be very effective to me, but maybe better than nothing. It will be all for naught to play of teams end up having a bunch of cases and having to cancel games due to not having enough healthy players, or having boring, sloppy games with bench players of starters are sick etc.
It will be interesting to see how sports plays out, especially when the virus likely rebounds in tall/winter.