Retired NFL player Robert Griffith says rule changes in the NFL need to keep up with the fact of bigger and faster players competing on faster turf rather than grass surfaces.
See more video clips with retired NFL player Robert Griffith.
Produced by Noel Gunther and Erica Queen, BrainLine.
About the author: Robert Griffith
Robert Otis "Griff" Griffith is a former American football strong safety in the National Football League. He also served as an executive member of the National Football League Player's Association for six years.