The common refrain heard every year by the time NFL draft reaches the seventh round is that sometimes it's better not to be selected at all than among the final picks.
If you're a prospect that's good enough to be chosen at that stage, you'll likely be one of the more sought-after rookies once the undrafted free-agency spree begins at the conclusion of the draft. So rather than be earmarked to one team - that may not be of your preference - you now have multiple teams from which to chose.
Byron Marshall was one such player.