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Kurt Warner still holds the top spot on this list. His story is the most unbelievable and heartwarming of them all.
Warner graduated the University of Northern Iowa in 1994 and went undrafted out of college.
He eventually returned to his hometown, Cedar Falls, Iowa, where he bagged groceries for $5.50 an hour and tossed gummy bears with his coworkers to pass the time.
Warner messed around in the Arena Football League for several years before he was signed by the St. Louis Rams in 1998.
By 1999, five years after graduating college, Warner was a second-string quarterback for the Rams.
That season, starting quarterback Trent Green sustained a season-ending injury in a preseason game, allowing Warner to take the helm.
Warner led the Rams to a Super Bowl XXXIV win, capping off a season in which he racked up over 4,000 passing yards and 41 touchdowns.
His 1999 performance allowed Warner to add two new lines to his resume: NFL MVP and Super Bowl MVP.
While an injury sidelined Warner in 2000, he was back in 2001, breaking records and leading the Rams to Super Bowl XXXVI.
Despite losing to the New England Patriots, this no-name Iowa guy had now emerged from obscurity to lead an NFL team to two Super Bowl appearances in three years.
Despite stumbling in the years after Super Bowl XXXVI, Warner came up for one last breath, leading the Arizona Cardinals to the Super Bowl in the 2008 postseason.
He performed outstandingly in the 2009 postseason, but the Cardinals fell to eventual Super Bowl champions the New Orleans Saints, and Warner finally closed the chapter on his incredible NFL run.