http://iscoresports.com/

Our last game added a new player to the roster. How do I get them on the team cumulative stats?

If you added him to the lineup during the game (versus to the team via team manager prior to the game) I think you have to do a **copy lineup to roster** from the game-misc menu to add him to the permanent team roster.

Yes, you need him to be on the Team Roster in order for him to appear in team stats. You can use the technique team mom describes, or you can just go to Team Manager, select the team, select Roster, and add the player to the roster directly.