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The NFL is usually made up of about 30% undrafted free agents (UDFA). After the 7th round of the NFL draft the phone frenzy begins — teams calling and convincing the prospects left on the top of their draft board to join their team. Between you and me, I think some general managers (GM) trade their 7th round picks to get a jump on the UDFAs; this seemed to be a common practice for the previous New York Giants GM Jerry Reese.
Many view UDFAs as an extension of the draft class – and rightfully so.