Abreu is an example of another situation to watch as various guys ( Casas, Grissom, Hendricks) begin to matriculate off the IL lists in July--August . No, not you, Trevor.
When the younger players, or even Yoshida , a veteran of sorts, come back they are rarely ready to just plug in and play. It would seem to take 2-3 weeks to get back to baseball speed and reactions. The implications are that when the player is physically ready, does a team competing on the edge of the playoffs stick with who got them there, or shift back to the presumed starter quickly and risk low production for the next month, not to mention re-injury as with Casas.
FO and game management is much easier if your team is like the Marlins with a terrible record.