Lightning-quick moves. Speed. Tenacity. Power. These are just some of the qualities of football's greatest running backs. All ten of the players: Jerome Bettis, Jim Brown, Eric Dickerson, Tony Dorsett, Franco Harris, Curtis Martin, Walter Payton, Barry Sanders, Emmitt Smith, and LaDainian Tomlinson, covered in this book have left their mark on the sport of football. Some are Super Bowl champions while others are record-holders. From yesterday's heroes...