Just because they don’t have the fanfare of a Johnny Manziel or Teddy Bridgewater doesn’t mean the day three quarterbacks are destined to be career backups. A handful of high-caliber NFL quarterbacks do get selected in the later rounds.
Not every quarterback drafted in the sixth round is going to turn into Tom Brady–most first-round quarterbacks won’t accomplish half of what Brady has–but many if not all of these fourth, fifth, sixth, and seventh-round quarterbacks will have a chance to push for a starting job at some point in their career, either by performance or by injury.
The question is, which of these quarterbacks is going to have the best chance to find success as a starter in the NFL? That takes a combination of talent and opportunity, where some of these draftees have definite roadblocks in front of them in the form of quarterbacks entrenched as starters.
Of course, a few more quarterbacks will still come off the board in the next 50+ picks, and a couple more will be snagged as undrafted free agents. Maybe Stephen Morris of Miami, Tahj Boyd of Clemson, Garrett Gilbert of SMU, Keith Price of Washington, Brett Smith of Wyoming, or Connor Shaw of South Carolina ends up being the best of the group, although they are still waiting to hear their names called.