For the 61 years that the Kansas City Chiefs have participated in AFL and NFL Drafts, teams have drafted approximately 250 players each year, and many of those have gone on to have legendary and Hall of Fame caliber careers.
However, for the players that do not get selected by a team during the annual selection meeting(s), becoming an undrafted rookie free agent (UDFA) is the last chance to make it in the professional ranks. Most of those players, of course, never make it on a 53-man NFL roster. But some ultimately stick around, and the ultra-rare—the true diamonds-in-the-rough—have gone on to be Pro Football Hall of Famers.