good points, but what if the pool exists only to limit the number of players who can be yo-yo'd back and forth without having to worry about outright waivers? you have your 26-man roster, with 14 reserve players on optional assignment (assuming the 40-man is full). assuming a cpp of 60, that's up to 20 non-roster players who can be summoned and sent back with no relinquishment of club control during and after a covid-19 outbreak. or, it could be any player in the organization that is yo-yo'd. we need clarity here. furthermore, unless there's some sort of player pool in place, clubs could in theory, bring up a player from the 2021 rule 4 draft, give him a taste of the bigs, and then send him back to the minors--and keep him off the 40-man for the next three to four seasons until he becomes eligible for the rule 5 draft.