Charles Philip `` Chuck '' Bednarik ( May 1 , 1925 -- March 21 , 2015 ) , or Concrete Charlie , was a professional American football player , known as one of the most devastating tacklers in the history of football and the last full-time two-way player in the National Football League .
Charles Philip `` Chuck '' Bednarik ( May 1 , 1925 -- March 21 , 2015 ) , or Concrete Charlie , was a professional American football player . He was known as one of the most devastating tacklers in the history of football and the last two-way player in the National Football League .