Today at 1 p.m. PT is the first major roster deadline for all 30 MLB teams to submit their 60-man Player Pool. This is going to be a group of 60 players that will be available to play for the Angels this season.
According to the league’s Operating Manual, all players on a 40-man roster “that the Club anticipates participating” during the season will be part of the Player Pool, while the rest will be made up of non-40-man roster players under contract. Any 40-man-roster players who are not included in a Player Pool (for example, maybe a prospect who isn’t deemed ready for the Majors) will still be paid during the season.