The precautions they’re taking are significant. They’re limiting the number of people each team can bring into the ‘bubble’ although reportedly in addition to an athletic trainer, equipment manager, and security officer each player can bring their private masseuse or security.
Everyone is going to have to wear Disney Magic Bans that’ll be used to check in for coronavirus testing. Anyone who tests positive will go into isolation housing, before being re-tested (given the risk of a false positive), and not be able to leave until consecutive negative tests. Players will also be able to track proximity and duration of time spent near others, as well as their temperature and heart rate.