#Broncos waive CB Curtis Marsh to make room on roster for TJ Ward
— Troy Renck (@TroyRenck) September 15, 2015
You can all stop asking why Marsh made the final roster, because the thread title is your answer.
If you thought somebody else should have been kept instead of Marsh, that player was likely to be waived or cut anyway, once T.J. Ward returned from suspension.