I have a player that isn’t showing up on the roster?

To  show up on the roster for a Game, the player must be active, not graduated on the Player record, and be active on the team. Click on the IR/Unable to Play tab to see if the player on the “Injured Reserve”. Double-click his name to release him from the IR. Check that the player is assigned to the team that you have selected for this game and that his graduation date is later than this season.