Undrafted free agents are the wild cards capable of making NFL training camps more entertaining than they arguably have any right to be.
The top players who weren't among the 250-plus selected in April's draft hit the open market and were able to field offers before going to teams of their choosing. That alone makes them interesting because, if they chose wisely, they have already put themselves in the best possible position to make the final rosters.
In fact, it isn't uncommon to hear that late-round prospects would rather slip into undrafted free agency.
But not all undrafted free agents are the same.