yes, alternate training sites have closed, and the ones that were occupying an affiliate's facility will now revert back to the affiliate. i haven't seen anything official regarding the elimination of taxi squads, but one has to assume that they have been eliminated. otherwise, how do class aaa clubs (which tend to be the level raided the most for replacements) maintain playing with a roster that's short up to five players every time their parent club goes on the road? and if parent clubs have to allow time for testing protocols, how much earlier do players have to leave their class aaa city to join the club ahead of their charter flight for their roadtrip? i believe that mlb was hoping that enough teams would meet the 85% threshold of fully vaccinated tier 1 personnel by tomorrow's start of the minor league season--which would allow for individual players to resort to commercial travel from class aaa cities to major league cities--just like we were accustomed to prior to the pandemic. but, as i said, i haven't seen any reports of taxi squads being eliminated officially.