Roger Duffy (American football)
Encyclopedia
Roger Duffy was a center
and guard
who played twelve seasons in the National Football League
.
Center (American football)
Center is a position in American football and Canadian football . The center is the innermost lineman of the offensive line on a football team's offense...
and guard
Guard (American football)
In American and Canadian football, a guard is a player that lines up between the center and the tackles on the offensive line of a football team....
who played twelve seasons in the National Football League
National Football League
The National Football League is the highest level of professional American football in the United States, and is considered the top professional American football league in the world. It was formed by eleven teams in 1920 as the American Professional Football Association, with the league changing...
.