Teams are using Spring Training games as a test run to show their respective cities how they plan on safely having 25% capacity: so far all teams in Florida (except maybe Toronto?) are requiring masks at all times "except for when eating and drinking." Detroit is going so far that they're not allowing gaiters; masks only. https://www.news-press.com/story/sports/mlb/springtraining/2021/02/25/spring-training-2021-baseball-schedules-covid-restrictions-florida-gulf-coast-ticket-information/4563672001/ Ultimately, there is two ways this will go down when the season opens (unless a city decides not to allow fans at all, which I certainly hope is not a legitimate option again): - Teams will decide that fans do not need to wear masks in their seats, but fans will still be required to wear them when walking to and from their seats, in the concourses, on the plazas, in the bathrooms, etc. or - Teams will require masks at all times except when eating and drinking, and certain fans will attempt to skirt that by nursing a single beer or bag of peanuts for a full 9 innings.