Running back

The running back (blue) in a typical I formation.
A running back turns up the field on his way to the end zone.

A running back (RB) is the position of a player on an American football team. They are the players who carry the ball the most. They receive handoffs, catch passes, and block for other runners.

References

Positions in American football and Canadian football
Offense Defense Special teams
Linemen Guard, Tackle, Center Linemen Tackle, End, Nose tackle Kicking players Placekicker, Punter, Kickoff specialist
Quarterback Linebackers Snapping Long snapper, Holder
Backs Halfback, Fullback, H-back Backs Cornerback, Safety Returning Punt returner, Kick returner
Receivers Wide receiver, Tight end, Slotback Nickelback, Dimeback Tackling Gunner
Formations - Nomenclature