How do you save teams and players on nba 2k13?

Well, first you have to create a player, then go on the player bio section, and choose the team you would like him to play for, and then save your roster and he should be in dynasty mode! If that does not work: After creating your player he will automatically go into the free agent pool. You then go to free agent signings and you sign him onto your team, then you save the roster and go to dynasty mode, he should be there! I hope this is useful! :)