To think that it was less than a few years ago that the Pittsburgh Steelers had a player affectionately nicknamed "Silverback".

c/p...."When you’re given the nickname “Silverback” by your teammates and peers, it should be an indication of the type of player you are....."

[link to steelersdepot.com (secure)]

James Harrison was arguably one of the toughest guys in the NFL and a future NFL Hall of Fame inductee.