MLB and NFL leagues and owners seem to lean towards the conservative side and we see the results so far.

MLB could've easily done a "bubble" like the NBA are there was even talk of 2 bubbles in FL & AZ where most teams have minor league facilities anyway but they said "nah, fuck it, play ball!"

Its looking like a large number of NFL players may sit out the season if they're financially able to.

The NHL has its 2 bubble locations in Canada and it appears to be working well.