Oh sorry for the confusion, let me try and clarify possibly better:
I bought an sealed, original copy of the game which had its own unique code, activated said code under my EA gamer login but then later not only sold the game, but erased all data I had stored on my Xbox hard-drive of NCAA 13. Now I want to get a pre-owned NCAA 13 and was wondering if that original code previously mentioned would still apply to this copy? My fear is that by erasing all data on my hard-drive that would include the code I entered as well...
Hope that helped! And thanks again for the help!