Signing a free agent on the open market really is a hit-and-miss proposition. Teams tend to be incredibly careful with whom they select to poach from other teams. After all, there is a reason that the original franchise is letting a certain player go.
Well-run organizations also know that you don't build the foundation of a winning team through free agency. Rather, it is utilized as a supplement to the NFL draft.
With that said, a good free-agent signing that pans out goes a long way in helping a team fill holes and move forward to the draft process without having to reach for a position of need.
This article gives you the five players that are going to have the greatest amount of success with their new teams following just three days of the frantic free-agent period.