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College: Northern Iowa
Highlights: two-time NFL MVP, one-time Super Bowl champion, one-time Super Bowl MVP
Perhaps the patron saint of undrafted players, Warner is Hall of Fame bound after a remarkable career...well, really two remarkable (albeit short-lived) careers combined into one.
After failing to make it in Green Bay, taking a gig bagging groceries, then succeeding in stints in the Arena League and NFL Europe, Warner became a two-time MVP and Super Bowl MVP with the Rams. From there things bottomed out until a resurgence in Arizona where he nearly led the Cardinals to their first-ever Super Bowl crown.
Destined for the Hall of Fame, Warner was overlooked at every stop of the way, including the 1994 draft, where nine quarterbacks, including Jim Miller, Steve Matthews, Doug Nussmeier and Perry Klein went ahead of him.
It's worth noting that Warren Moon is a very, very close second to Warner on this list. He too put up gaudy numbers and is already enshrined in Canton. But because Warner led his team to a world title (and nearly did so two other times) he edges out Moon, who never even made it to his conference's title game. Quarterback success is measured in championships.