Guard (gridiron football)
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A guard, also called an offensive guard and subcategorized as a left guard or right guard, is a gridiron football position that lines up between the center and tackles on the offensive line. Guards ar
David DeCastro lined up as an offensive guard for the Pittsburgh Steelers against the Green Bay Packers defense in December 2013
Center (gridiron football)
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Center or centre is a position in American football. The center is the innermost lineman of the offensive line on a football team's offense who passes the ball between his legs to the quarterback at t
Jason Kelce (No. 62) prepares to snap the football to Philadelphia Eagles quarterback Carson Wentz in a 2017 game
Center Bum Day
Center Ryan Kelly prepares to snap to Andrew Luck