I added this clarification to the IL rule. This is not a change, just making things clearer. A player is eligible to be on the IL whenever it officially exists in the MLB. It begins some time during Spring Training and ends at the end of the MLB season. Officially in FGM, that would be the week following the end of the regular season.
Players may again be added to the injured list during spring training, when their MLB team has officially added the player to the list.