FILE - This Aug. 12, 2012 file photo shows Indianapolis Colts rookie quarterback Andrew Luck celebrates after throwing a touchdown pass against the St. Louis Rams in the first half of a

 

              FILE - This Aug. 12, 2012 file photo shows Indianapolis Colts rookie quarterback Andrew Luck celebrates after throwing a touchdown pass against the St. Louis Rams in the first half of a
FILE - This Aug. 12, 2012 file photo shows Indianapolis Colts rookie quarterback Andrew Luck celebrates after throwing a touchdown pass against the St. Louis Rams in the first half of an NFL preseason football game in Indianapolis. Youth and inexperience have taken over the most important position in the NFL. Ten starting quarterbacks will have one year or less of experience this season, with five teams letting rookies run the show. (AP Photo/Michael Conroy, File)