The NFL is full of undrafted players who have defied the odds to have lengthy pro careers. A franchise quarterback (the Cowboys' Tony Romo) went undrafted. A Super Bowl hero (Patriots cornerback Malcolm Butler) went undrafted. And in this year's rookie class, Seahawks running back Thomas Rawls is among the undrafted players who have made key contributions this season.
NFL Nation reporters detail the undrafted players from every team. Click the links after each team to view the full posts, or check out the full thread here.
Atlanta Falcons: Fullback Patrick DiMarco, undrafted out of South Carolina in 2011, is having a Pro Bowl-caliber season as a blocker. Read the full list here.
Arizona Cardinals: The Cardinals have found rousing success from undrafted free agents throughout the Bruce Arians and Steve Keim era. Read the full list here.
Baltimore Ravens: Kicker Justin Tucker could be remembered as the best undrafted free agent for a Ravens team that prides itself in finding gems. Read the full list here.
Buffalo Bills: Chris Hogan, the Bills' No. 3 wide receiver, and Nickell Robey, the Bills' slot cornerback, have been important role players for the past few seasons. Read the full list here.
Carolina Panthers: The Panthers' NFL-best 16-game regular-season winning streak began when two undrafted players were inserted along the offensive line last season. Read the full list here.
Chicago Bears: Second-year linebacker Christian Jones has been a solid fit in Vic Fangio's 3-4 defense. Read the full list here.
Cincinnati Bengals: You can't mention Bengals undrafted free agents without bringing up linebacker Vontaze Burfict's name. Read the full list here.
Cleveland Browns: The success of last year's undrafted players has sunk with the team's hopes this season. Read the full list here.
Dallas Cowboys: Quarterback Tony Romo is the standard-bearer of undrafted free agents everywhere. Read the full list here.
Denver Broncos: Few teams develop their undrafted free agents like the Broncos have. Read the full list here.
Detroit Lions: The Lions have gotten good use out of undrafted free agents this season. Read the full list here.
Green Bay Packers: Fullback John Kuhn has more longevity than any other player on the Packers' roster who came into the league undrafted. Read the full list here.
Houston Texans: Undrafted quarterback Brian Hoyer is one of only three quarterbacks from the 2009 draft class still in the NFL. Read the full list here.
Indianapolis Colts: There's no better undrafted free agent on the Colts than kicker Adam Vinatieri. Read the full list here.
Jacksonville Jaguars: Wide receiver Allen Hurns has been one of the Jaguars' better offensive players since he signed in 2014. Read the full list here.
Kansas City Chiefs: The Chiefs are getting significant contributions from several players who weren't drafted before they entered the NFL, starting with running back Charcandrick West. Read the full list here.
Miami Dolphins: Defensive end Cameron Wake and cornerback Brent Grimes are the two shining stars of this group. Read the full list here.
Minnesota Vikings: Defensive tackle Tom Johnson has seen more playing time because of injuries. Read the full list here.
New York Giants: The gem of the Giants' undrafted free-agent crop is wide receiver Victor Cruz. Read the full list there.
New York Jets: Nose tackle Damon Harrison is the cream of the Jets' crop of undrafted free agents. Read the full list here.
New England Patriots: Any discussion of undrafted free agents starts with cornerback Malcolm Butler, who burst onto the national scene with his Super Bowl interception. Read the full list here.
New Orleans Saints: Cornerback Delvin Breaux and wide receiver Willie Snead have been two of the brightest spots for the Saints this season. Read the full list here.
Oakland Raiders: Wide receiver Seth Roberts is definitely a flavor of the moment for the Raiders. Read the full list here.
Philadelphia Eagles: Left tackle Jason Peters would make any list of the greatest undrafted players in NFL history. Read the full list here.
Pittsburgh Steelers: The Steelers are still cashing in on one of the best undrafted free-agent stories of the past two decades. Read the full list here.
San Diego Chargers: The Chargers chose Josh Lambo over incumbent Nick Novak in a training camp battle for the kicker job. Read the full list here.
San Francisco 49ers: The 49ers have a recent, and relatively rich, history of relying on undrafted free agents who have become more than roster fillers. Read the full list here.
St. Louis Rams: This group is led by Rodney McLeod, who has risen through the ranks from key special-teams contributor to starting free safety. Read the full list here.
Seattle Seahawks: As late as mid-August, it was unclear whether Thomas Rawls would make the Seahawks' 53-man roster. Now he seems a good bet to be the team's running back of the future. Read the full list here.
Tampa Bay Buccaneers: Tampa Bay has had 13 undrafted players start at least one game this season. Read the full list here.
Tennessee Titans: Linebacker Wesley Woodyard has been a big piece of a vastly improved Titans defense. Read the full list here.
Washington Redskins: The Redskins' special teams have survived because of the help provided by undrafted free agents. Read the full list here.