The Bowl Championship Series (BCS) was formed 20 years ago, giving the college football a definitive title game for the first time. To celebrate 20 years of championship games, ESPN Analytics calculated overall, offensive and defensive ratings to find the strongest national champions. The model includes all FBS teams and approximately 15,000 games to establish teams' strength to return a rating measured in points above the average team. Brad Edwards counts down the best CFB teams that championships since 1998:

(0:36) 2001 Ohio State Buckeyes
(1:09) 2006 Florida Gators
(1:33) 2007 LSU Tigers
(1:55) 1998 Tennessee Volunteers
(2:14) 2003 LSU Tigers
(2:38) 2003 USC Trojans
(3:00) 2010 Auburn Tigers
(3:33) 2014 Ohio State Buckeyes
(3:57) 2000 Oklahoma Sooners
(4:15) 2016 Clemson Tigers
(4:37) 2017 Alabama Crimson Tide
(5:04) 1999 Florida State Seminoles
(5:25) 2009 Alabama Crimson Tide
(5:44) 2015 Alabama Crimson Tide
(6:05) 2012 Alabama Crimson Tide
(6:24) 2011 Alabama Crimson Tide
(6:44) 2004 USC Trojans
(7:01) 2013 Florida State Seminoles
(7:23) 2001 Miami Hurricanes
(7:44) 2008 Florida Gators
(8:10) 2005 Texas Longhorns

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