The NFL Draft is a year-round source of debate for draft experts and media scouts who aim to pick out the best players who will be selected by teams in the annual rookie selection meeting. It’s also a year-round job for NFL front offices to evaluate and sort though game tape and scouting reports from hundreds of colleges and try to decipher which ones are worth a draft choice in the first 250 or so picks in the draft. But sometimes they miss out on players in the Draft and get a second chance to sign these players once the draft is over. Undrafted free agents can have big impacts on NFL franchises as we discussed here previously. And while not every undrafted rookie is going to turn out to be Donald Penn they can be solid contributors. And for the 2013 Tampa Bay Buccaneers Rashaan Melvin could just be that guy.